Liquidsoap scripting language reference

The Source / … categories contain all functions that return sources. The Input functions are those which build elementary sources (playing files, synthesizing sound, etc.). The Output functions are those which take a source and register it for being streamed to the outside (file, soundcard, audio server, etc.). The Visualization functions are experimental ones that let you visualize in real-time some aspects of the audio stream. The Sound Processing functions are those which basically work on the source as a continuous audio stream. They would typically be mixers of streams, audio effects or analysis. Finally, Track Processing functions are basically all others, often having a behaviour that depends on or affects the extra information that liquidsoap puts in streams: track limits and metadata.

• Source / Conversions
• Source / Input
• Source / Liquidsoap
• Source / MIDI Processing
• Source / Output
• Source / Sound Processing
• Source / Sound Synthesis
• Source / Track Processing
• Source / Video Processing
• Source / Visualization
• Bool
• Control
• Interaction
• Liquidsoap
• List
• Math
• Pair
• String
• System

Bool

Control

Interaction

add_skip_command

Add a skip function to a source when it does not have one by default.

Type:

('c.{id : () -> 'b, skip : (() -> 'a)}) -> unit

Arguments:

• (unlabeled) (of type 'c.{id : () -> 'b, skip : (() -> 'a)}): The source to attach the command to.

audioscrobbler.submit.full

Submit songs using audioscrobbler, respecting the full protocol: First signal song as now playing when starting, and then submit song when it ends.

Type:

(user : string, password : string, ?host : string,
 ?port : int, ?source : string, ?length : bool,
 ?delay : float, ?force : bool, source(audio='a,
 video='b, midi='c)
 .{
   time : () -> float,
   shutdown : () -> unit,
   fallible : () -> bool,
   skip : () -> unit,
   seek : (float) -> float,
   is_up : () -> bool,
   remaining : () -> float,
   on_track : ((([string * string]) -> unit)) -> unit,
   on_shutdown : ((() -> unit)) -> unit,
   is_ready : () -> bool,
   id : () -> string,
   on_metadata : (((([string * string]) -> unit)) ->
                  unit)
 }) -> source(audio='a, video='b, midi='c)
.{
  time : () -> float,
  shutdown : () -> unit,
  fallible : () -> bool,
  skip : () -> unit,
  seek : (float) -> float,
  is_up : () -> bool,
  remaining : () -> float,
  on_track : ((([string * string]) -> unit)) -> unit,
  on_shutdown : ((() -> unit)) -> unit,
  on_metadata : ((([string * string]) -> unit)) -> unit,
  is_ready : () -> bool,
  id : (() -> string)}

Arguments:

• user (of type string)
• password (of type string)
• host (of type string, which defaults to "post.audioscrobbler.com")
• port (of type int, which defaults to 80)
• source (of type string, which defaults to "broadcast"): Source for tracks. Should be one of: “broadcast”, “user”, “recommendation” or “unknown”. Since liquidsoap is intented for radio broadcasting, this is the default. Sources other than user don’t need duration to be set.
• length (of type bool, which defaults to false): Try to submit length information. This operation can be CPU intensive. Value forced to true when used with the “user” source type.
• delay (of type float, which defaults to 10.): Submit song when there is only this delay left, in seconds.
• force (of type bool, which defaults to false): If remaining time is null, the song will be assumed to be skipped or cuted, and not submitted. Set to zero to disable this behaviour.
• (unlabeled) (of type source(audio='a, video='b, midi='c) .{ time : () -> float, shutdown : () -> unit, fallible : () -> bool, skip : () -> unit, seek : (float) -> float, is_up : () -> bool, remaining : () -> float, on_track : ((([string * string]) -> unit)) -> unit, on_shutdown : ((() -> unit)) -> unit, is_ready : () -> bool, id : () -> string, on_metadata : (((([string * string]) -> unit)) -> unit) })

lastfm.nowplaying

Submit metadata to lastfm.fm using the audioscrobbler protocol (nowplaying mode).

Type:

(user : string, password : string, ?length : bool,
 [string * string]) -> unit

Arguments:

• user (of type string)
• password (of type string)
• length (of type bool, which defaults to false): Try to submit length information. This operation can be CPU intensive. Value forced to true when used with the “user” source type.
• (unlabeled) (of type [string * string])

lastfm.submit

Submit metadata to lastfm.fm using the audioscrobbler protocol.

Type:

(user : string, password : string, ?source : string,
 ?length : bool, [string * string]) -> unit

Arguments:

• user (of type string)
• password (of type string)
• source (of type string, which defaults to "broadcast"): Source for tracks. Should be one of: “broadcast”, “user”, “recommendation” or “unknown”. Since liquidsoap is intented for radio broadcasting, this is the default. Sources other than user don’t need duration to be set.
• length (of type bool, which defaults to false): Try to submit length information. This operation can be CPU intensive. Value forced to true when used with the “user” source type.
• (unlabeled) (of type [string * string])

lastfm.submit.full

Submit songs to lastfm using audioscrobbler, respecting the full protocol: First signal song as now playing when starting, and then submit song when it ends.

Type:

(user : string, password : string, ?source : string,
 ?length : bool, ?delay : float, ?force : bool,
 source(audio='a, video='b, midi='c)
 .{
   time : () -> float,
   shutdown : () -> unit,
   fallible : () -> bool,
   skip : () -> unit,
   seek : (float) -> float,
   is_up : () -> bool,
   remaining : () -> float,
   on_track : ((([string * string]) -> unit)) -> unit,
   on_shutdown : ((() -> unit)) -> unit,
   is_ready : () -> bool,
   id : () -> string,
   on_metadata : (((([string * string]) -> unit)) ->
                  unit)
 }) -> source(audio='a, video='b, midi='c)
.{
  time : () -> float,
  shutdown : () -> unit,
  fallible : () -> bool,
  skip : () -> unit,
  seek : (float) -> float,
  is_up : () -> bool,
  remaining : () -> float,
  on_track : ((([string * string]) -> unit)) -> unit,
  on_shutdown : ((() -> unit)) -> unit,
  on_metadata : ((([string * string]) -> unit)) -> unit,
  is_ready : () -> bool,
  id : (() -> string)}

Arguments:

• user (of type string)
• password (of type string)
• source (of type string, which defaults to "broadcast"): Source for tracks. Should be one of: “broadcast”, “user”, “recommendation” or “unknown”. Since liquidsoap is intented for radio broadcasting, this is the default. Sources other than user don’t need duration to be set.
• length (of type bool, which defaults to false): Try to submit length information. This operation can be CPU intensive. Value forced to true when used with the “user” source type.
• delay (of type float, which defaults to 10.): Submit song when there is only this delay left, in seconds. If remaining time is less than this value, the song will be assumed to be skipped or cuted, and not submitted. Set to zero to disable this behaviour.
• force (of type bool, which defaults to false): If remaining time is null, the song will be assumed to be skipped or cuted, and not submitted. Set to zero to disable this behaviour.
• (unlabeled) (of type source(audio='a, video='b, midi='c) .{ time : () -> float, shutdown : () -> unit, fallible : () -> bool, skip : () -> unit, seek : (float) -> float, is_up : () -> bool, remaining : () -> float, on_track : ((([string * string]) -> unit)) -> unit, on_shutdown : ((() -> unit)) -> unit, is_ready : () -> bool, id : () -> string, on_metadata : (((([string * string]) -> unit)) -> unit) })

librefm.nowplaying

Submit metadata to libre.fm using the audioscrobbler protocol (nowplaying mode).

Type:

(user : string, password : string, ?length : bool,
 [string * string]) -> unit

Arguments:

• user (of type string)
• password (of type string)
• length (of type bool, which defaults to false): Try to submit length information. This operation can be CPU intensive. Value forced to true when used with the “user” source type.
• (unlabeled) (of type [string * string])

librefm.submit

Submit metadata to libre.fm using the audioscrobbler protocol.

Type:

(user : string, password : string, ?source : string,
 ?length : bool, [string * string]) -> unit

Arguments:

• user (of type string)
• password (of type string)
• source (of type string, which defaults to "broadcast"): Source for tracks. Should be one of: “broadcast”, “user”, “recommendation” or “unknown”. Since liquidsoap is intented for radio broadcasting, this is the default. Sources other than user don’t need duration to be set.
• length (of type bool, which defaults to false): Try to submit length information. This operation can be CPU intensive. Value forced to true when used with the “user” source type.
• (unlabeled) (of type [string * string])

librefm.submit.full

Submit songs to librefm using audioscrobbler, respecting the full protocol: First signal song as now playing when starting, and then submit song when it ends.

Type:

(user : string, password : string, ?source : string,
 ?length : bool, ?delay : float, ?force : bool,
 source(audio='a, video='b, midi='c)
 .{
   time : () -> float,
   shutdown : () -> unit,
   fallible : () -> bool,
   skip : () -> unit,
   seek : (float) -> float,
   is_up : () -> bool,
   remaining : () -> float,
   on_track : ((([string * string]) -> unit)) -> unit,
   on_shutdown : ((() -> unit)) -> unit,
   is_ready : () -> bool,
   id : () -> string,
   on_metadata : (((([string * string]) -> unit)) ->
                  unit)
 }) -> source(audio='a, video='b, midi='c)
.{
  time : () -> float,
  shutdown : () -> unit,
  fallible : () -> bool,
  skip : () -> unit,
  seek : (float) -> float,
  is_up : () -> bool,
  remaining : () -> float,
  on_track : ((([string * string]) -> unit)) -> unit,
  on_shutdown : ((() -> unit)) -> unit,
  on_metadata : ((([string * string]) -> unit)) -> unit,
  is_ready : () -> bool,
  id : (() -> string)}

Arguments:

• user (of type string)
• password (of type string)
• source (of type string, which defaults to "broadcast"): Source for tracks. Should be one of: “broadcast”, “user”, “recommendation” or “unknown”. Since liquidsoap is intented for radio broadcasting, this is the default. Sources other than user don’t need duration to be set.
• length (of type bool, which defaults to false): Try to submit length information. This operation can be CPU intensive. Value forced to true when used with the “user” source type.
• delay (of type float, which defaults to 10.): Submit song when there is only this delay left, in seconds. If remaining time is less than this value, the song will be assumed to be skipped or cuted, and not submitted. Set to zero to disable this behaviour.
• force (of type bool, which defaults to false): If remaining time is null, the song will be assumed to be skipped or cuted, and not submitted. Set to zero to disable this behaviour.
• (unlabeled) (of type source(audio='a, video='b, midi='c) .{ time : () -> float, shutdown : () -> unit, fallible : () -> bool, skip : () -> unit, seek : (float) -> float, is_up : () -> bool, remaining : () -> float, on_track : ((([string * string]) -> unit)) -> unit, on_shutdown : ((() -> unit)) -> unit, is_ready : () -> bool, id : () -> string, on_metadata : (((([string * string]) -> unit)) -> unit) })

metadata.float_getter

Create a float getter from a metadata: this is a float, whose value can be changed with a metadata.

Type:

(float, 'a, 'd
 .{on_metadata : ((((['a * string]) -> unit)) -> 'c)}) ->
'd.{on_metadata : ((((['a * string]) -> unit)) -> 'c)} *
(() -> float) where 'a is an orderable type

Arguments:

• (unlabeled) (of type float): Initial value.
• (unlabeled) (of type anything that is an orderable type): Metadata on which the value should be updated.
• (unlabeled) (of type 'd.{on_metadata : ((((['a * string]) -> unit)) -> 'c)} where 'a is an orderable type): Source containing the metadata.

metadata.string_getter

Create a string getter from a metadata: this is a string, whose value can be changed with a metadata.

Type:

(string, 'a, 'd
 .{on_metadata : ((((['a * string]) -> unit)) -> 'c)}) ->
'd.{on_metadata : ((((['a * string]) -> unit)) -> 'c)} *
(() -> string) where 'a is an orderable type

Arguments:

• (unlabeled) (of type string): Initial value.
• (unlabeled) (of type anything that is an orderable type): Metadata on which the value should be updated.
• (unlabeled) (of type 'd.{on_metadata : ((((['a * string]) -> unit)) -> 'c)} where 'a is an orderable type): Source containing the metadata.

Liquidsoap

ffmpeg.filter.abench

Ffmpeg filter: Benchmark part of a filtergraph.

Type:

(?action : int?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• action (of type int?, which defaults to null): set action. (default: 0, possible values: 0 (start), 1 (stop))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.abitscope

Ffmpeg filter: Convert input audio to audio bit scope video output.

Type:

(?rate : string?, ?r : string?, ?size : string?,
 ?s : string?, ?colors : string?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.video

Arguments:

• rate (of type string?, which defaults to null): set video rate. (default: 25)
• r (of type string?, which defaults to null): set video rate. (default: 25)
• size (of type string?, which defaults to null): set video size. (default: 1024x256)
• s (of type string?, which defaults to null): set video size. (default: 1024x256)
• colors (of type string?, which defaults to null): set channels colors. (default: red|green|blue|yellow|orange|lime|pink|magenta|brown)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.acompressor

Ffmpeg filter: Audio compressor.

Type:

(?level_in : float?, ?mode : int?, ?threshold : float?,
 ?ratio : float?, ?attack : float?, ?release : float?,
 ?makeup : float?, ?knee : float?, ?link : int?,
 ?detection : int?, ?level_sc : float?, ?mix : float?,
 ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• level_in (of type float?, which defaults to null): set input gain. (default: 1.)
• mode (of type int?, which defaults to null): set mode. (default: 0, possible values: 0 (downward), 1 (upward))
• threshold (of type float?, which defaults to null): set threshold. (default: 0.125)
• ratio (of type float?, which defaults to null): set ratio. (default: 2.)
• attack (of type float?, which defaults to null): set attack. (default: 20.)
• release (of type float?, which defaults to null): set release. (default: 250.)
• makeup (of type float?, which defaults to null): set make up gain. (default: 1.)
• knee (of type float?, which defaults to null): set knee. (default: 2.82843)
• link (of type int?, which defaults to null): set link type. (default: 0, possible values: 0 (average), 1 (maximum))
• detection (of type int?, which defaults to null): set detection. (default: 1, possible values: 0 (peak), 1 (rms))
• level_sc (of type float?, which defaults to null): set sidechain gain. (default: 1.)
• mix (of type float?, which defaults to null): set mix. (default: 1.)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.acontrast

Ffmpeg filter: Simple audio dynamic range compression/expansion filter.

Type:

(?contrast : float?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• contrast (of type float?, which defaults to null): set contrast. (default: 33.)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.acopy

Ffmpeg filter: Copy the input audio unchanged to the output.

Type:

(ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.acrossfade

Ffmpeg filter: Cross fade two input audio streams.

Type:

(?nb_samples : int?, ?ns : int?, ?duration : int?,
 ?d : int?, ?overlap : bool?, ?o : bool?, ?curve1 : int?,
 ?c1 : int?, ?curve2 : int?, ?c2 : int?,
 ffmpeg.filter.graph, ffmpeg.filter.audio,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• nb_samples (of type int?, which defaults to null): set number of samples for cross fade duration. (default: 44100)
• ns (of type int?, which defaults to null): set number of samples for cross fade duration. (default: 44100)
• duration (of type int?, which defaults to null): set cross fade duration. (default: 0)
• d (of type int?, which defaults to null): set cross fade duration. (default: 0)
• overlap (of type bool?, which defaults to null): overlap 1st stream end with 2nd stream start. (default: true)
• o (of type bool?, which defaults to null): overlap 1st stream end with 2nd stream start. (default: true)
• curve1 (of type int?, which defaults to null): set fade curve type for 1st stream. (default: 0, possible values: 0 (tri), 1 (qsin), 2 (esin), 3 (hsin), 4 (log), 5 (ipar), 6 (qua), 7 (cub), 8 (squ), 9 (cbr), 10 (par), 11 (exp), 12 (iqsin), 13 (ihsin), 14 (dese), 15 (desi), 16 (losi), 17 (nofade))
• c1 (of type int?, which defaults to null): set fade curve type for 1st stream. (default: 0, possible values: 0 (tri), 1 (qsin), 2 (esin), 3 (hsin), 4 (log), 5 (ipar), 6 (qua), 7 (cub), 8 (squ), 9 (cbr), 10 (par), 11 (exp), 12 (iqsin), 13 (ihsin), 14 (dese), 15 (desi), 16 (losi), 17 (nofade))
• curve2 (of type int?, which defaults to null): set fade curve type for 2nd stream. (default: 0, possible values: 0 (tri), 1 (qsin), 2 (esin), 3 (hsin), 4 (log), 5 (ipar), 6 (qua), 7 (cub), 8 (squ), 9 (cbr), 10 (par), 11 (exp), 12 (iqsin), 13 (ihsin), 14 (dese), 15 (desi), 16 (losi), 17 (nofade))
• c2 (of type int?, which defaults to null): set fade curve type for 2nd stream. (default: 0, possible values: 0 (tri), 1 (qsin), 2 (esin), 3 (hsin), 4 (log), 5 (ipar), 6 (qua), 7 (cub), 8 (squ), 9 (cbr), 10 (par), 11 (exp), 12 (iqsin), 13 (ihsin), 14 (dese), 15 (desi), 16 (losi), 17 (nofade))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.acrossover

Ffmpeg filter: Split audio into per-bands streams. This filter has dynamic outputs: returned value is a tuple of audio and video outputs. Total number of outputs is determined at runtime.

Type:

(?split : string?, ?order : int?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) ->
[ffmpeg.filter.audio] * [ffmpeg.filter.video]

Arguments:

• split (of type string?, which defaults to null): set split frequencies. (default: 500)
• order (of type int?, which defaults to null): set order. (default: 1, possible values: 0 (2nd), 1 (4th), 2 (8th))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.acrusher

Ffmpeg filter: Reduce audio bit resolution.

Type:

(?level_in : float?, ?level_out : float?, ?bits : float?,
 ?mix : float?, ?mode : int?, ?dc : float?, ?aa : float?,
 ?samples : float?, ?lfo : bool?, ?lforange : float?,
 ?lforate : float?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• level_in (of type float?, which defaults to null): set level in. (default: 1.)
• level_out (of type float?, which defaults to null): set level out. (default: 1.)
• bits (of type float?, which defaults to null): set bit reduction. (default: 8.)
• mix (of type float?, which defaults to null): set mix. (default: 0.5)
• mode (of type int?, which defaults to null): set mode. (default: 0, possible values: 0 (lin), 1 (log))
• dc (of type float?, which defaults to null): set DC. (default: 1.)
• aa (of type float?, which defaults to null): set anti-aliasing. (default: 0.5)
• samples (of type float?, which defaults to null): set sample reduction. (default: 1.)
• lfo (of type bool?, which defaults to null): enable LFO. (default: false)
• lforange (of type float?, which defaults to null): set LFO depth. (default: 20.)
• lforate (of type float?, which defaults to null): set LFO rate. (default: 0.3)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.acue

Ffmpeg filter: Delay filtering to match a cue.

Type:

(?cue : int?, ?preroll : int?, ?buffer : int?,
 ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• cue (of type int?, which defaults to null): cue unix timestamp in microseconds. (default: 0)
• preroll (of type int?, which defaults to null): preroll duration in seconds. (default: 0)
• buffer (of type int?, which defaults to null): buffer duration in seconds. (default: 0)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.adeclick

Ffmpeg filter: Remove impulsive noise from input audio.

Type:

(?w : float?, ?o : float?, ?a : float?, ?t : float?,
 ?b : float?, ?m : int?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• w (of type float?, which defaults to null): set window size. (default: 55.)
• o (of type float?, which defaults to null): set window overlap. (default: 75.)
• a (of type float?, which defaults to null): set autoregression order. (default: 2.)
• t (of type float?, which defaults to null): set threshold. (default: 2.)
• b (of type float?, which defaults to null): set burst fusion. (default: 2.)
• m (of type int?, which defaults to null): set overlap method. (default: 0, possible values: 0 (a), 1 (s))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.adeclip

Ffmpeg filter: Remove clipping from input audio.

Type:

(?w : float?, ?o : float?, ?a : float?, ?t : float?,
 ?n : int?, ?m : int?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• w (of type float?, which defaults to null): set window size. (default: 55.)
• o (of type float?, which defaults to null): set window overlap. (default: 75.)
• a (of type float?, which defaults to null): set autoregression order. (default: 8.)
• t (of type float?, which defaults to null): set threshold. (default: 10.)
• n (of type int?, which defaults to null): set histogram size. (default: 1000)
• m (of type int?, which defaults to null): set overlap method. (default: 0, possible values: 0 (a), 1 (s))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.adelay

Ffmpeg filter: Delay one or more audio channels.

Type:

(?delays : string?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• delays (of type string?, which defaults to null): set list of delays for each channel
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.aderivative

Ffmpeg filter: Compute derivative of input audio.

Type:

(ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.adrawgraph

Ffmpeg filter: Draw a graph using input audio metadata.

Type:

(?m1 : string?, ?fg1 : string?, ?m2 : string?,
 ?fg2 : string?, ?m3 : string?, ?fg3 : string?,
 ?m4 : string?, ?fg4 : string?, ?bg : string?,
 ?min : float?, ?max : float?, ?mode : int?,
 ?slide : int?, ?size : string?, ?s : string?,
 ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.video

Arguments:

• m1 (of type string?, which defaults to null): set 1st metadata key. (default: )
• fg1 (of type string?, which defaults to null): set 1st foreground color expression. (default: 0xffff0000)
• m2 (of type string?, which defaults to null): set 2nd metadata key. (default: )
• fg2 (of type string?, which defaults to null): set 2nd foreground color expression. (default: 0xff00ff00)
• m3 (of type string?, which defaults to null): set 3rd metadata key. (default: )
• fg3 (of type string?, which defaults to null): set 3rd foreground color expression. (default: 0xffff00ff)
• m4 (of type string?, which defaults to null): set 4th metadata key. (default: )
• fg4 (of type string?, which defaults to null): set 4th foreground color expression. (default: 0xffffff00)
• bg (of type string?, which defaults to null): set background color. (default: white)
• min (of type float?, which defaults to null): set minimal value. (default: -1.)
• max (of type float?, which defaults to null): set maximal value. (default: 1.)
• mode (of type int?, which defaults to null): set graph mode. (default: 2, possible values: 0 (bar), 1 (dot), 2 (line))
• slide (of type int?, which defaults to null): set slide mode. (default: 0, possible values: 0 (frame), 1 (replace), 2 (scroll), 3 (rscroll), 4 (picture))
• size (of type string?, which defaults to null): set graph size. (default: 900x256)
• s (of type string?, which defaults to null): set graph size. (default: 900x256)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.aecho

Ffmpeg filter: Add echoing to the audio.

Type:

(?in_gain : float?, ?out_gain : float?,
 ?delays : string?, ?decays : string?,
 ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• in_gain (of type float?, which defaults to null): set signal input gain. (default: 0.6)
• out_gain (of type float?, which defaults to null): set signal output gain. (default: 0.3)
• delays (of type string?, which defaults to null): set list of signal delays. (default: 1000)
• decays (of type string?, which defaults to null): set list of signal decays. (default: 0.5)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.aemphasis

Ffmpeg filter: Audio emphasis.

Type:

(?level_in : float?, ?level_out : float?, ?mode : int?,
 ?type : int?, ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• level_in (of type float?, which defaults to null): set input gain. (default: 1.)
• level_out (of type float?, which defaults to null): set output gain. (default: 1.)
• mode (of type int?, which defaults to null): set filter mode. (default: 0, possible values: 0 (reproduction), 1 (production))
• type (of type int?, which defaults to null): set filter type. (default: 4, possible values: 0 (col), 1 (emi), 2 (bsi), 3 (riaa), 4 (cd), 5 (50fm), 6 (75fm), 7 (50kf), 8 (75kf))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.aeval

Ffmpeg filter: Filter audio signal according to a specified expression.

Type:

(?exprs : string?, ?channel_layout : string?,
 ?c : string?, ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• exprs (of type string?, which defaults to null): set the ‘|’-separated list of channels expressions
• channel_layout (of type string?, which defaults to null): set channel layout
• c (of type string?, which defaults to null): set channel layout
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.aevalsrc

Ffmpeg filter: Generate an audio signal generated by an expression.

Type:

(?exprs : string?, ?nb_samples : int?, ?n : int?,
 ?sample_rate : string?, ?s : string?, ?duration : int?,
 ?d : int?, ?channel_layout : string?, ?c : string?,
 ffmpeg.filter.graph) -> ffmpeg.filter.audio

Arguments:

• exprs (of type string?, which defaults to null): set the ‘|’-separated list of channels expressions
• nb_samples (of type int?, which defaults to null): set the number of samples per requested frame. (default: 1024)
• n (of type int?, which defaults to null): set the number of samples per requested frame. (default: 1024)
• sample_rate (of type string?, which defaults to null): set the sample rate. (default: 44100)
• s (of type string?, which defaults to null): set the sample rate. (default: 44100)
• duration (of type int?, which defaults to null): set audio duration. (default: -1)
• d (of type int?, which defaults to null): set audio duration. (default: -1)
• channel_layout (of type string?, which defaults to null): set channel layout
• c (of type string?, which defaults to null): set channel layout
• (unlabeled) (of type ffmpeg.filter.graph)

ffmpeg.filter.afade

Ffmpeg filter: Fade in/out input audio.

Type:

(?type : int?, ?t : int?, ?start_sample : int?,
 ?ss : int?, ?nb_samples : int?, ?ns : int?,
 ?start_time : int?, ?st : int?, ?duration : int?,
 ?d : int?, ?curve : int?, ?c : int?,
 ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• type (of type int?, which defaults to null): set the fade direction. (default: 0, possible values: 0 (in), 1 (out))
• t (of type int?, which defaults to null): set the fade direction. (default: 0, possible values: 0 (in), 1 (out))
• start_sample (of type int?, which defaults to null): set number of first sample to start fading. (default: 0)
• ss (of type int?, which defaults to null): set number of first sample to start fading. (default: 0)
• nb_samples (of type int?, which defaults to null): set number of samples for fade duration. (default: 44100)
• ns (of type int?, which defaults to null): set number of samples for fade duration. (default: 44100)
• start_time (of type int?, which defaults to null): set time to start fading. (default: 0)
• st (of type int?, which defaults to null): set time to start fading. (default: 0)
• duration (of type int?, which defaults to null): set fade duration. (default: 0)
• d (of type int?, which defaults to null): set fade duration. (default: 0)
• curve (of type int?, which defaults to null): set fade curve type. (default: 0, possible values: 0 (tri), 1 (qsin), 2 (esin), 3 (hsin), 4 (log), 5 (ipar), 6 (qua), 7 (cub), 8 (squ), 9 (cbr), 10 (par), 11 (exp), 12 (iqsin), 13 (ihsin), 14 (dese), 15 (desi), 16 (losi), 17 (nofade))
• c (of type int?, which defaults to null): set fade curve type. (default: 0, possible values: 0 (tri), 1 (qsin), 2 (esin), 3 (hsin), 4 (log), 5 (ipar), 6 (qua), 7 (cub), 8 (squ), 9 (cbr), 10 (par), 11 (exp), 12 (iqsin), 13 (ihsin), 14 (dese), 15 (desi), 16 (losi), 17 (nofade))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.afftdn

Ffmpeg filter: Denoise audio samples using FFT.

Type:

(?nr : float?, ?nf : float?, ?nt : int?, ?bn : string?,
 ?rf : float?, ?tn : bool?, ?tr : bool?, ?om : int?,
 ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• nr (of type float?, which defaults to null): set the noise reduction. (default: 12.)
• nf (of type float?, which defaults to null): set the noise floor. (default: -50.)
• nt (of type int?, which defaults to null): set the noise type. (default: 0, possible values: 0 (w), 1 (v), 2 (s), 3 (c))
• bn (of type string?, which defaults to null): set the custom bands noise
• rf (of type float?, which defaults to null): set the residual floor. (default: -38.)
• tn (of type bool?, which defaults to null): track noise. (default: false)
• tr (of type bool?, which defaults to null): track residual. (default: false)
• om (of type int?, which defaults to null): set output mode. (default: 1, possible values: 0 (i), 1 (o), 2 (n))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.afftfilt

Ffmpeg filter: Apply arbitrary expressions to samples in frequency domain.

Type:

(?real : string?, ?imag : string?, ?win_size : int?,
 ?win_func : int?, ?overlap : float?,
 ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• real (of type string?, which defaults to null): set channels real expressions. (default: re)
• imag (of type string?, which defaults to null): set channels imaginary expressions. (default: im)
• win_size (of type int?, which defaults to null): set window size. (default: 4096)
• win_func (of type int?, which defaults to null): set window function. (default: 1, possible values: 0 (rect), 4 (bartlett), 1 (hann), 1 (hanning), 2 (hamming), 3 (blackman), 5 (welch), 6 (flattop), 7 (bharris), 8 (bnuttall), 11 (bhann), 9 (sine), 10 (nuttall), 12 (lanczos), 13 (gauss), 14 (tukey), 15 (dolph), 16 (cauchy), 17 (parzen), 18 (poisson), 19 (bohman))
• overlap (of type float?, which defaults to null): set window overlap. (default: 0.75)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.afifo

Ffmpeg filter: Buffer input frames and send them when they are requested.

Type:

(ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.afir

Ffmpeg filter: Apply Finite Impulse Response filter with supplied coefficients in 2nd stream. This filter has dynamic outputs: returned value is a tuple of audio and video outputs. Total number of outputs is determined at runtime.

Type:

(?dry : float?, ?wet : float?, ?length : float?,
 ?gtype : int?, ?irgain : float?, ?irfmt : int?,
 ?maxir : float?, ?response : bool?, ?channel : int?,
 ?size : string?, ?rate : string?, ?minp : int?,
 ?maxp : int?, ffmpeg.filter.graph, ffmpeg.filter.audio,
 ffmpeg.filter.audio) ->
[ffmpeg.filter.audio] * [ffmpeg.filter.video]

Arguments:

• dry (of type float?, which defaults to null): set dry gain. (default: 1.)
• wet (of type float?, which defaults to null): set wet gain. (default: 1.)
• length (of type float?, which defaults to null): set IR length. (default: 1.)
• gtype (of type int?, which defaults to null): set IR auto gain type. (default: 0, possible values: -1 (none), 0 (peak), 1 (dc), 2 (gn))
• irgain (of type float?, which defaults to null): set IR gain. (default: 1.)
• irfmt (of type int?, which defaults to null): set IR format. (default: 1, possible values: 0 (mono), 1 (input))
• maxir (of type float?, which defaults to null): set max IR length. (default: 30.)
• response (of type bool?, which defaults to null): show IR frequency response. (default: false)
• channel (of type int?, which defaults to null): set IR channel to display frequency response. (default: 0)
• size (of type string?, which defaults to null): set video size. (default: hd720)
• rate (of type string?, which defaults to null): set video rate. (default: 25)
• minp (of type int?, which defaults to null): set min partition size. (default: 8192)
• maxp (of type int?, which defaults to null): set max partition size. (default: 8192)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.aformat

Ffmpeg filter: Convert the input audio to one of the specified formats.

Type:

(?sample_fmts : string?, ?sample_rates : string?,
 ?channel_layouts : string?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• sample_fmts (of type string?, which defaults to null): A ‘|’-separated list of sample formats.
• sample_rates (of type string?, which defaults to null): A ‘|’-separated list of sample rates.
• channel_layouts (of type string?, which defaults to null): A ‘|’-separated list of channel layouts.
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.agate

Ffmpeg filter: Audio gate.

Type:

(?level_in : float?, ?mode : int?, ?range : float?,
 ?threshold : float?, ?ratio : float?, ?attack : float?,
 ?release : float?, ?makeup : float?, ?knee : float?,
 ?detection : int?, ?link : int?, ?level_sc : float?,
 ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• level_in (of type float?, which defaults to null): set input level. (default: 1.)
• mode (of type int?, which defaults to null): set mode. (default: 0, possible values: 0 (downward), 1 (upward))
• range (of type float?, which defaults to null): set max gain reduction. (default: 0.06125)
• threshold (of type float?, which defaults to null): set threshold. (default: 0.125)
• ratio (of type float?, which defaults to null): set ratio. (default: 2.)
• attack (of type float?, which defaults to null): set attack. (default: 20.)
• release (of type float?, which defaults to null): set release. (default: 250.)
• makeup (of type float?, which defaults to null): set makeup gain. (default: 1.)
• knee (of type float?, which defaults to null): set knee. (default: 2.828427125)
• detection (of type int?, which defaults to null): set detection. (default: 1, possible values: 0 (peak), 1 (rms))
• link (of type int?, which defaults to null): set link. (default: 0, possible values: 0 (average), 1 (maximum))
• level_sc (of type float?, which defaults to null): set sidechain gain. (default: 1.)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.agraphmonitor

Ffmpeg filter: Show various filtergraph stats.

Type:

(?size : string?, ?s : string?, ?opacity : float?,
 ?o : float?, ?mode : int?, ?m : int?, ?flags : int?,
 ?f : int?, ?rate : string?, ?r : string?,
 ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.video

Arguments:

• size (of type string?, which defaults to null): set monitor size. (default: hd720)
• s (of type string?, which defaults to null): set monitor size. (default: hd720)
• opacity (of type float?, which defaults to null): set video opacity. (default: 0.9)
• o (of type float?, which defaults to null): set video opacity. (default: 0.9)
• mode (of type int?, which defaults to null): set mode. (default: 0, possible values: 0 (full), 1 (compact))
• m (of type int?, which defaults to null): set mode. (default: 0, possible values: 0 (full), 1 (compact))
• flags (of type int?, which defaults to null): set flags. (default: 1, possible values: 1 (queue), 4 (frame_count_in), 2 (frame_count_out), 8 (pts), 16 (time), 32 (timebase), 64 (format), 128 (size), 256 (rate))
• f (of type int?, which defaults to null): set flags. (default: 1, possible values: 1 (queue), 4 (frame_count_in), 2 (frame_count_out), 8 (pts), 16 (time), 32 (timebase), 64 (format), 128 (size), 256 (rate))
• rate (of type string?, which defaults to null): set video rate. (default: 25)
• r (of type string?, which defaults to null): set video rate. (default: 25)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.ahistogram

Ffmpeg filter: Convert input audio to histogram video output.

Type:

(?dmode : int?, ?rate : string?, ?r : string?,
 ?size : string?, ?s : string?, ?scale : int?,
 ?ascale : int?, ?acount : int?, ?rheight : float?,
 ?slide : int?, ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.video

Arguments:

• dmode (of type int?, which defaults to null): set method to display channels. (default: 0, possible values: 0 (single), 1 (separate))
• rate (of type string?, which defaults to null): set video rate. (default: 25)
• r (of type string?, which defaults to null): set video rate. (default: 25)
• size (of type string?, which defaults to null): set video size. (default: hd720)
• s (of type string?, which defaults to null): set video size. (default: hd720)
• scale (of type int?, which defaults to null): set display scale. (default: 3, possible values: 3 (log), 1 (sqrt), 2 (cbrt), 0 (lin), 4 (rlog))
• ascale (of type int?, which defaults to null): set amplitude scale. (default: 1, possible values: 1 (log), 0 (lin))
• acount (of type int?, which defaults to null): how much frames to accumulate. (default: 1)
• rheight (of type float?, which defaults to null): set histogram ratio of window height. (default: 0.1)
• slide (of type int?, which defaults to null): set sonogram sliding. (default: 0, possible values: 0 (replace), 1 (scroll))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.aiir

Ffmpeg filter: Apply Infinite Impulse Response filter with supplied coefficients. This filter has dynamic outputs: returned value is a tuple of audio and video outputs. Total number of outputs is determined at runtime.

Type:

(?z : string?, ?p : string?, ?k : string?, ?dry : float?,
 ?wet : float?, ?f : int?, ?r : int?, ?e : int?,
 ?mix : float?, ?response : bool?, ?channel : int?,
 ?size : string?, ?rate : string?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) ->
[ffmpeg.filter.audio] * [ffmpeg.filter.video]

Arguments:

• z (of type string?, which defaults to null): set B/numerator/zeros coefficients. (default: 1+0i 1-0i)
• p (of type string?, which defaults to null): set A/denominator/poles coefficients. (default: 1+0i 1-0i)
• k (of type string?, which defaults to null): set channels gains. (default: 1|1)
• dry (of type float?, which defaults to null): set dry gain. (default: 1.)
• wet (of type float?, which defaults to null): set wet gain. (default: 1.)
• f (of type int?, which defaults to null): set coefficients format. (default: 1, possible values: 0 (tf), 1 (zp), 2 (pr), 3 (pd))
• r (of type int?, which defaults to null): set kind of processing. (default: 1, possible values: 0 (d), 1 (s))
• e (of type int?, which defaults to null): set precision. (default: 0, possible values: 0 (dbl), 1 (flt), 2 (i32), 3 (i16))
• mix (of type float?, which defaults to null): set mix. (default: 1.)
• response (of type bool?, which defaults to null): show IR frequency response. (default: false)
• channel (of type int?, which defaults to null): set IR channel to display frequency response. (default: 0)
• size (of type string?, which defaults to null): set video size. (default: hd720)
• rate (of type string?, which defaults to null): set video rate. (default: 25)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.aintegral

Ffmpeg filter: Compute integral of input audio.

Type:

(ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.ainterleave

Ffmpeg filter: Temporally interleave audio inputs. This filter has dynamic inputs: last two arguments are lists of audio and video inputs. Total number of inputs is determined at runtime.

Type:

(?nb_inputs : int?, ?n : int?, ffmpeg.filter.graph,
 [ffmpeg.filter.audio], [ffmpeg.filter.video]) ->
ffmpeg.filter.audio

Arguments:

• nb_inputs (of type int?, which defaults to null): set number of inputs. (default: 2)
• n (of type int?, which defaults to null): set number of inputs. (default: 2)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type [ffmpeg.filter.audio])
• (unlabeled) (of type [ffmpeg.filter.video])

ffmpeg.filter.alimiter

Ffmpeg filter: Audio lookahead limiter.

Type:

(?level_in : float?, ?level_out : float?,
 ?limit : float?, ?attack : float?, ?release : float?,
 ?asc : bool?, ?asc_level : float?, ?level : bool?,
 ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• level_in (of type float?, which defaults to null): set input level. (default: 1.)
• level_out (of type float?, which defaults to null): set output level. (default: 1.)
• limit (of type float?, which defaults to null): set limit. (default: 1.)
• attack (of type float?, which defaults to null): set attack. (default: 5.)
• release (of type float?, which defaults to null): set release. (default: 50.)
• asc (of type bool?, which defaults to null): enable asc. (default: false)
• asc_level (of type float?, which defaults to null): set asc level. (default: 0.5)
• level (of type bool?, which defaults to null): auto level. (default: true)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.allpass

Ffmpeg filter: Apply a two-pole all-pass filter.

Type:

(?frequency : float?, ?f : float?, ?width_type : int?,
 ?t : int?, ?width : float?, ?w : float?, ?mix : float?,
 ?m : float?, ?channels : string?, ?c : string?,
 ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• frequency (of type float?, which defaults to null): set central frequency. (default: 3000.)
• f (of type float?, which defaults to null): set central frequency. (default: 3000.)
• width_type (of type int?, which defaults to null): set filter-width type. (default: 1, possible values: 1 (h), 3 (q), 2 (o), 4 (s), 5 (k))
• t (of type int?, which defaults to null): set filter-width type. (default: 1, possible values: 1 (h), 3 (q), 2 (o), 4 (s), 5 (k))
• width (of type float?, which defaults to null): set filter-width. (default: 707.1)
• w (of type float?, which defaults to null): set filter-width. (default: 707.1)
• mix (of type float?, which defaults to null): set mix. (default: 1.)
• m (of type float?, which defaults to null): set mix. (default: 1.)
• channels (of type string?, which defaults to null): set channels to filter
• c (of type string?, which defaults to null): set channels to filter
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.allrgb

Ffmpeg filter: Generate all RGB colors.

Type:

(?rate : string?, ?r : string?, ?duration : int?,
 ?d : int?, ?sar : string?, ffmpeg.filter.graph) ->
ffmpeg.filter.video

Arguments:

• rate (of type string?, which defaults to null): set video rate. (default: 25)
• r (of type string?, which defaults to null): set video rate. (default: 25)
• duration (of type int?, which defaults to null): set video duration. (default: -1)
• d (of type int?, which defaults to null): set video duration. (default: -1)
• sar (of type string?, which defaults to null): set video sample aspect ratio. (default: 1/1)
• (unlabeled) (of type ffmpeg.filter.graph)

ffmpeg.filter.allyuv

Ffmpeg filter: Generate all yuv colors.

Type:

(?rate : string?, ?r : string?, ?duration : int?,
 ?d : int?, ?sar : string?, ffmpeg.filter.graph) ->
ffmpeg.filter.video

Arguments:

• rate (of type string?, which defaults to null): set video rate. (default: 25)
• r (of type string?, which defaults to null): set video rate. (default: 25)
• duration (of type int?, which defaults to null): set video duration. (default: -1)
• d (of type int?, which defaults to null): set video duration. (default: -1)
• sar (of type string?, which defaults to null): set video sample aspect ratio. (default: 1/1)
• (unlabeled) (of type ffmpeg.filter.graph)

ffmpeg.filter.aloop

Ffmpeg filter: Loop audio samples.

Type:

(?loop : int?, ?size : int?, ?start : int?,
 ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• loop (of type int?, which defaults to null): number of loops. (default: 0)
• size (of type int?, which defaults to null): max number of samples to loop. (default: 0)
• start (of type int?, which defaults to null): set the loop start sample. (default: 0)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.alphaextract

Ffmpeg filter: Extract an alpha channel as a grayscale image component. This filter has dynamic outputs: returned value is a tuple of audio and video outputs. Total number of outputs is determined at runtime.

Type:

(ffmpeg.filter.graph, ffmpeg.filter.video) ->
[ffmpeg.filter.audio] * [ffmpeg.filter.video]

Arguments:

• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.alphamerge

Ffmpeg filter: Copy the luma value of the second input into the alpha channel of the first input.

Type:

(ffmpeg.filter.graph, ffmpeg.filter.video,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.amerge

Ffmpeg filter: Merge two or more audio streams into a single multi-channel stream. This filter has dynamic inputs: last two arguments are lists of audio and video inputs. Total number of inputs is determined at runtime.

Type:

(?inputs : int?, ffmpeg.filter.graph,
 [ffmpeg.filter.audio], [ffmpeg.filter.video]) ->
ffmpeg.filter.audio

Arguments:

• inputs (of type int?, which defaults to null): specify the number of inputs. (default: 2)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type [ffmpeg.filter.audio])
• (unlabeled) (of type [ffmpeg.filter.video])

ffmpeg.filter.ametadata

Ffmpeg filter: Manipulate audio frame metadata.

Type:

(?mode : int?, ?key : string?, ?value : string?,
 ?function : int?, ?expr : string?, ?file : string?,
 ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• mode (of type int?, which defaults to null): set a mode of operation. (default: 0, possible values: 0 (select), 1 (add), 2 (modify), 3 (delete), 4 (print))
• key (of type string?, which defaults to null): set metadata key
• value (of type string?, which defaults to null): set metadata value
• function (of type int?, which defaults to null): function for comparing values. (default: 0, possible values: 0 (same_str), 1 (starts_with), 2 (less), 3 (equal), 4 (greater), 5 (expr))
• expr (of type string?, which defaults to null): set expression for expr function
• file (of type string?, which defaults to null): set file where to print metadata information
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.amix

Ffmpeg filter: Audio mixing. This filter has dynamic inputs: last two arguments are lists of audio and video inputs. Total number of inputs is determined at runtime.

Type:

(?inputs : int?, ?duration : int?,
 ?dropout_transition : float?, ?weights : string?,
 ffmpeg.filter.graph, [ffmpeg.filter.audio],
 [ffmpeg.filter.video]) -> ffmpeg.filter.audio

Arguments:

• inputs (of type int?, which defaults to null): Number of inputs.. (default: 2)
• duration (of type int?, which defaults to null): How to determine the end-of-stream.. (default: 0, possible values: 0 (longest), 1 (shortest), 2 (first))
• dropout_transition (of type float?, which defaults to null): Transition time, in seconds, for volume renormalization when an input stream ends.. (default: 2.)
• weights (of type string?, which defaults to null): Set weight for each input.. (default: 1 1)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type [ffmpeg.filter.audio])
• (unlabeled) (of type [ffmpeg.filter.video])

ffmpeg.filter.amovie

Ffmpeg filter: Read audio from a movie source. This filter has dynamic outputs: returned value is a tuple of audio and video outputs. Total number of outputs is determined at runtime.

Type:

(?filename : string?, ?format_name : string?,
 ?f : string?, ?stream_index : int?, ?si : int?,
 ?seek_point : float?, ?sp : float?, ?streams : string?,
 ?s : string?, ?loop : int?, ?discontinuity : int?,
 ffmpeg.filter.graph) ->
[ffmpeg.filter.audio] * [ffmpeg.filter.video]

Arguments:

• filename (of type string?, which defaults to null)
• format_name (of type string?, which defaults to null): set format name
• f (of type string?, which defaults to null): set format name
• stream_index (of type int?, which defaults to null): set stream index. (default: -1)
• si (of type int?, which defaults to null): set stream index. (default: -1)
• seek_point (of type float?, which defaults to null): set seekpoint (seconds). (default: 0.)
• sp (of type float?, which defaults to null): set seekpoint (seconds). (default: 0.)
• streams (of type string?, which defaults to null): set streams
• s (of type string?, which defaults to null): set streams
• loop (of type int?, which defaults to null): set loop count. (default: 1)
• discontinuity (of type int?, which defaults to null): set discontinuity threshold. (default: 0)
• (unlabeled) (of type ffmpeg.filter.graph)

ffmpeg.filter.amplify

Ffmpeg filter: Amplify changes between successive video frames.

Type:

(?radius : int?, ?factor : float?, ?threshold : float?,
 ?tolerance : float?, ?low : int?, ?high : int?,
 ?planes : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• radius (of type int?, which defaults to null): set radius. (default: 2)
• factor (of type float?, which defaults to null): set factor. (default: 2.)
• threshold (of type float?, which defaults to null): set threshold. (default: 10.)
• tolerance (of type float?, which defaults to null): set tolerance. (default: 0.)
• low (of type int?, which defaults to null): set low limit for amplification. (default: 65535)
• high (of type int?, which defaults to null): set high limit for amplification. (default: 65535)
• planes (of type int?, which defaults to null): set what planes to filter. (default: 7)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.amultiply

Ffmpeg filter: Multiply two audio streams.

Type:

(ffmpeg.filter.graph, ffmpeg.filter.audio,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.anequalizer

Ffmpeg filter: Apply high-order audio parametric multi band equalizer. This filter has dynamic outputs: returned value is a tuple of audio and video outputs. Total number of outputs is determined at runtime.

Type:

(?params : string?, ?curves : bool?, ?size : string?,
 ?mgain : float?, ?fscale : int?, ?colors : string?,
 ffmpeg.filter.graph, ffmpeg.filter.audio) ->
[ffmpeg.filter.audio] * [ffmpeg.filter.video]

Arguments:

• params (of type string?, which defaults to null): Default:
• curves (of type bool?, which defaults to null): draw frequency response curves. (default: false)
• size (of type string?, which defaults to null): set video size. (default: hd720)
• mgain (of type float?, which defaults to null): set max gain. (default: 60.)
• fscale (of type int?, which defaults to null): set frequency scale. (default: 1, possible values: 0 (lin), 1 (log))
• colors (of type string?, which defaults to null): set channels curves colors. (default: red|green|blue|yellow|orange|lime|pink|magenta|brown)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.anlmdn

Ffmpeg filter: Reduce broadband noise from stream using Non-Local Means.

Type:

(?s : float?, ?p : int?, ?r : int?, ?o : int?,
 ?m : float?, ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• s (of type float?, which defaults to null): set denoising strength. (default: 1e-05)
• p (of type int?, which defaults to null): set patch duration. (default: 2000)
• r (of type int?, which defaults to null): set research duration. (default: 6000)
• o (of type int?, which defaults to null): set output mode. (default: 1, possible values: 0 (i), 1 (o), 2 (n))
• m (of type float?, which defaults to null): set smooth factor. (default: 11.)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.anoisesrc

Ffmpeg filter: Generate a noise audio signal.

Type:

(?sample_rate : int?, ?r : int?, ?amplitude : float?,
 ?a : float?, ?duration : int?, ?d : int?, ?color : int?,
 ?colour : int?, ?c : int?, ?seed : int?, ?s : int?,
 ?nb_samples : int?, ?n : int?, ffmpeg.filter.graph) ->
ffmpeg.filter.audio

Arguments:

• sample_rate (of type int?, which defaults to null): set sample rate. (default: 48000)
• r (of type int?, which defaults to null): set sample rate. (default: 48000)
• amplitude (of type float?, which defaults to null): set amplitude. (default: 1.)
• a (of type float?, which defaults to null): set amplitude. (default: 1.)
• duration (of type int?, which defaults to null): set duration. (default: 0)
• d (of type int?, which defaults to null): set duration. (default: 0)
• color (of type int?, which defaults to null): set noise color. (default: 0, possible values: 0 (white), 1 (pink), 2 (brown), 3 (blue), 4 (violet))
• colour (of type int?, which defaults to null): set noise color. (default: 0, possible values: 0 (white), 1 (pink), 2 (brown), 3 (blue), 4 (violet))
• c (of type int?, which defaults to null): set noise color. (default: 0, possible values: 0 (white), 1 (pink), 2 (brown), 3 (blue), 4 (violet))
• seed (of type int?, which defaults to null): set random seed. (default: -1)
• s (of type int?, which defaults to null): set random seed. (default: -1)
• nb_samples (of type int?, which defaults to null): set the number of samples per requested frame. (default: 1024)
• n (of type int?, which defaults to null): set the number of samples per requested frame. (default: 1024)
• (unlabeled) (of type ffmpeg.filter.graph)

ffmpeg.filter.anull

Ffmpeg filter: Pass the source unchanged to the output.

Type:

(ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.anullsink

Ffmpeg filter: Do absolutely nothing with the input audio.

Type:

(ffmpeg.filter.graph, ffmpeg.filter.audio) -> unit

Arguments:

• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.anullsrc

Ffmpeg filter: Null audio source, return empty audio frames.

Type:

(?channel_layout : string?, ?cl : string?,
 ?sample_rate : string?, ?r : string?,
 ?nb_samples : int?, ?n : int?, ffmpeg.filter.graph) ->
ffmpeg.filter.audio

Arguments:

• channel_layout (of type string?, which defaults to null): set channel_layout. (default: stereo)
• cl (of type string?, which defaults to null): set channel_layout. (default: stereo)
• sample_rate (of type string?, which defaults to null): set sample rate. (default: 44100)
• r (of type string?, which defaults to null): set sample rate. (default: 44100)
• nb_samples (of type int?, which defaults to null): set the number of samples per requested frame. (default: 1024)
• n (of type int?, which defaults to null): set the number of samples per requested frame. (default: 1024)
• (unlabeled) (of type ffmpeg.filter.graph)

ffmpeg.filter.apad

Ffmpeg filter: Pad audio with silence.

Type:

(?packet_size : int?, ?pad_len : int?, ?whole_len : int?,
 ?pad_dur : int?, ?whole_dur : int?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• packet_size (of type int?, which defaults to null): set silence packet size. (default: 4096)
• pad_len (of type int?, which defaults to null): set number of samples of silence to add. (default: -1)
• whole_len (of type int?, which defaults to null): set minimum target number of samples in the audio stream. (default: -1)
• pad_dur (of type int?, which defaults to null): set duration of silence to add. (default: 0)
• whole_dur (of type int?, which defaults to null): set minimum target duration in the audio stream. (default: 0)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.aperms

Ffmpeg filter: Set permissions for the output audio frame.

Type:

(?mode : int?, ?seed : int?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• mode (of type int?, which defaults to null): select permissions mode. (default: 0, possible values: 0 (none), 1 (ro), 2 (rw), 3 (toggle), 4 (random))
• seed (of type int?, which defaults to null): set the seed for the random mode. (default: -1)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.aphasemeter

Ffmpeg filter: Convert input audio to phase meter video output. This filter has dynamic outputs: returned value is a tuple of audio and video outputs. Total number of outputs is determined at runtime.

Type:

(?rate : string?, ?r : string?, ?size : string?,
 ?s : string?, ?rc : int?, ?gc : int?, ?bc : int?,
 ?mpc : string?, ?video : bool?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) ->
[ffmpeg.filter.audio] * [ffmpeg.filter.video]

Arguments:

• rate (of type string?, which defaults to null): set video rate. (default: 25)
• r (of type string?, which defaults to null): set video rate. (default: 25)
• size (of type string?, which defaults to null): set video size. (default: 800x400)
• s (of type string?, which defaults to null): set video size. (default: 800x400)
• rc (of type int?, which defaults to null): set red contrast. (default: 2)
• gc (of type int?, which defaults to null): set green contrast. (default: 7)
• bc (of type int?, which defaults to null): set blue contrast. (default: 1)
• mpc (of type string?, which defaults to null): set median phase color. (default: none)
• video (of type bool?, which defaults to null): set video output. (default: true)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.aphaser

Ffmpeg filter: Add a phasing effect to the audio.

Type:

(?in_gain : float?, ?out_gain : float?, ?delay : float?,
 ?decay : float?, ?speed : float?, ?type : int?,
 ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• in_gain (of type float?, which defaults to null): set input gain. (default: 0.4)
• out_gain (of type float?, which defaults to null): set output gain. (default: 0.74)
• delay (of type float?, which defaults to null): set delay in milliseconds. (default: 3.)
• decay (of type float?, which defaults to null): set decay. (default: 0.4)
• speed (of type float?, which defaults to null): set modulation speed. (default: 0.5)
• type (of type int?, which defaults to null): set modulation type. (default: 1, possible values: 1 (triangular), 1 (t), 0 (sinusoidal), 0 (s))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.apulsator

Ffmpeg filter: Audio pulsator.

Type:

(?level_in : float?, ?level_out : float?, ?mode : int?,
 ?amount : float?, ?offset_l : float?,
 ?offset_r : float?, ?width : float?, ?timing : int?,
 ?bpm : float?, ?ms : int?, ?hz : float?,
 ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• level_in (of type float?, which defaults to null): set input gain. (default: 1.)
• level_out (of type float?, which defaults to null): set output gain. (default: 1.)
• mode (of type int?, which defaults to null): set mode. (default: 0, possible values: 0 (sine), 1 (triangle), 2 (square), 3 (sawup), 4 (sawdown))
• amount (of type float?, which defaults to null): set modulation. (default: 1.)
• offset_l (of type float?, which defaults to null): set offset L. (default: 0.)
• offset_r (of type float?, which defaults to null): set offset R. (default: 0.5)
• width (of type float?, which defaults to null): set pulse width. (default: 1.)
• timing (of type int?, which defaults to null): set timing. (default: 2, possible values: 0 (bpm), 1 (ms), 2 (hz))
• bpm (of type float?, which defaults to null): set BPM. (default: 120.)
• ms (of type int?, which defaults to null): set ms. (default: 500)
• hz (of type float?, which defaults to null): set frequency. (default: 2.)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.arealtime

Ffmpeg filter: Slow down filtering to match realtime.

Type:

(?limit : int?, ?speed : float?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• limit (of type int?, which defaults to null): sleep time limit. (default: 2000000)
• speed (of type float?, which defaults to null): speed factor. (default: 1.)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.aresample

Ffmpeg filter: Resample audio data.

Type:

(?sample_rate : int?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• sample_rate (of type int?, which defaults to null): Default: 0
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.areverse

Ffmpeg filter: Reverse an audio clip.

Type:

(ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.aselect

Ffmpeg filter: Select audio frames to pass in output. This filter has dynamic outputs: returned value is a tuple of audio and video outputs. Total number of outputs is determined at runtime.

Type:

(?expr : string?, ?e : string?, ?outputs : int?,
 ?n : int?, ffmpeg.filter.graph, ffmpeg.filter.audio) ->
[ffmpeg.filter.audio] * [ffmpeg.filter.video]

Arguments:

• expr (of type string?, which defaults to null): set an expression to use for selecting frames. (default: 1)
• e (of type string?, which defaults to null): set an expression to use for selecting frames. (default: 1)
• outputs (of type int?, which defaults to null): set the number of outputs. (default: 1)
• n (of type int?, which defaults to null): set the number of outputs. (default: 1)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.asendcmd

Ffmpeg filter: Send commands to filters.

Type:

(?commands : string?, ?c : string?, ?filename : string?,
 ?f : string?, ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• commands (of type string?, which defaults to null): set commands
• c (of type string?, which defaults to null): set commands
• filename (of type string?, which defaults to null): set commands file
• f (of type string?, which defaults to null): set commands file
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.asetnsamples

Ffmpeg filter: Set the number of samples for each output audio frames.

Type:

(?nb_out_samples : int?, ?n : int?, ?pad : bool?,
 ?p : bool?, ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• nb_out_samples (of type int?, which defaults to null): set the number of per-frame output samples. (default: 1024)
• n (of type int?, which defaults to null): set the number of per-frame output samples. (default: 1024)
• pad (of type bool?, which defaults to null): pad last frame with zeros. (default: true)
• p (of type bool?, which defaults to null): pad last frame with zeros. (default: true)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.asetpts

Ffmpeg filter: Set PTS for the output audio frame.

Type:

(?expr : string?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• expr (of type string?, which defaults to null): Expression determining the frame timestamp. (default: PTS)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.asetrate

Ffmpeg filter: Change the sample rate without altering the data.

Type:

(?sample_rate : int?, ?r : int?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• sample_rate (of type int?, which defaults to null): set the sample rate. (default: 44100)
• r (of type int?, which defaults to null): set the sample rate. (default: 44100)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.asettb

Ffmpeg filter: Set timebase for the audio output link.

Type:

(?expr : string?, ?tb : string?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• expr (of type string?, which defaults to null): set expression determining the output timebase. (default: intb)
• tb (of type string?, which defaults to null): set expression determining the output timebase. (default: intb)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.ashowinfo

Ffmpeg filter: Show textual information for each audio frame.

Type:

(ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.asidedata

Ffmpeg filter: Manipulate audio frame side data.

Type:

(?mode : int?, ?type : int?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• mode (of type int?, which defaults to null): set a mode of operation. (default: 0, possible values: 0 (select), 1 (delete))
• type (of type int?, which defaults to null): set side data type. (default: -1, possible values: 0 (PANSCAN), 1 (A53_CC), 2 (STEREO3D), 3 (MATRIXENCODING), 4 (DOWNMIX_INFO), 5 (REPLAYGAIN), 6 (DISPLAYMATRIX), 7 (AFD), 8 (MOTION_VECTORS), 9 (SKIP_SAMPLES), 10 (AUDIO_SERVICE_TYPE), 11 (MASTERING_DISPLAY_METADATA), 12 (GOP_TIMECODE), 13 (SPHERICAL), 14 (CONTENT_LIGHT_LEVEL), 15 (ICC_PROFILE), 16 (QP_TABLE_PROPERTIES), 17 (QP_TABLE_DATA), 18 (S12M_TIMECOD), 19 (DYNAMIC_HDR_PLUS), 20 (REGIONS_OF_INTEREST))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.asoftclip

Ffmpeg filter: Audio Soft Clipper.

Type:

(?type : int?, ?param : float?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• type (of type int?, which defaults to null): set softclip type. (default: 0, possible values: 0 (tanh), 1 (atan), 2 (cubic), 3 (exp), 4 (alg), 5 (quintic), 6 (sin))
• param (of type float?, which defaults to null): set softclip parameter. (default: 1.)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.asplit

Ffmpeg filter: Pass on the audio input to N audio outputs. This filter has dynamic outputs: returned value is a tuple of audio and video outputs. Total number of outputs is determined at runtime.

Type:

(?outputs : int?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) ->
[ffmpeg.filter.audio] * [ffmpeg.filter.video]

Arguments:

• outputs (of type int?, which defaults to null): set number of outputs. (default: 2)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.ass

Ffmpeg filter: Render ASS subtitles onto input video using the libass library.

Type:

(?filename : string?, ?f : string?,
 ?original_size : string?, ?fontsdir : string?,
 ?alpha : bool?, ?shaping : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• filename (of type string?, which defaults to null): set the filename of file to read
• f (of type string?, which defaults to null): set the filename of file to read
• original_size (of type string?, which defaults to null): set the size of the original video (used to scale fonts)
• fontsdir (of type string?, which defaults to null): set the directory containing the fonts to read
• alpha (of type bool?, which defaults to null): enable processing of alpha channel. (default: false)
• shaping (of type int?, which defaults to null): set shaping engine. (default: -1, possible values: -1 (auto), 0 (simple), 1 (complex))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.astats

Ffmpeg filter: Show time domain statistics about audio frames.

Type:

(?length : float?, ?metadata : bool?, ?reset : int?,
 ?measure_perchannel : int?, ?measure_overall : int?,
 ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• length (of type float?, which defaults to null): set the window length. (default: 0.05)
• metadata (of type bool?, which defaults to null): inject metadata in the filtergraph. (default: false)
• reset (of type int?, which defaults to null): recalculate stats after this many frames. (default: 0)
• measure_perchannel (of type int?, which defaults to null): only measure_perchannel these per-channel statistics. (default: 4294967295, possible values: 0 (none), 4294967295 (all), 1 (DC_offset), 2 (Min_level), 4 (Max_level), 8 (Min_difference), 16 (Max_difference), 32 (Mean_difference), 64 (RMS_difference), 128 (Peak_level), 256 (RMS_level), 512 (RMS_peak), 1024 (RMS_trough), 2048 (Crest_factor), 4096 (Flat_factor), 8192 (Peak_count), 16384 (Bit_depth), 32768 (Dynamic_range), 65536 (Zero_crossings), 131072 (Zero_crossings_rate), 262144 (Number_of_samples), 524288 (Number_of_NaNs), 1048576 (Number_of_Infs), 2097152 (Number_of_denormals))
• measure_overall (of type int?, which defaults to null): only measure_perchannel these overall statistics. (default: 4294967295, possible values: 0 (none), 4294967295 (all), 1 (DC_offset), 2 (Min_level), 4 (Max_level), 8 (Min_difference), 16 (Max_difference), 32 (Mean_difference), 64 (RMS_difference), 128 (Peak_level), 256 (RMS_level), 512 (RMS_peak), 1024 (RMS_trough), 2048 (Crest_factor), 4096 (Flat_factor), 8192 (Peak_count), 16384 (Bit_depth), 32768 (Dynamic_range), 65536 (Zero_crossings), 131072 (Zero_crossings_rate), 262144 (Number_of_samples), 524288 (Number_of_NaNs), 1048576 (Number_of_Infs), 2097152 (Number_of_denormals))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.astreamselect

Ffmpeg filter: Select audio streams This filter has dynamic inputs: last two arguments are lists of audio and video inputs. Total number of inputs is determined at runtime. This filter has dynamic outputs: returned value is a tuple of audio and video outputs. Total number of outputs is determined at runtime.

Type:

(?inputs : int?, ?map : string?, ffmpeg.filter.graph,
 [ffmpeg.filter.audio], [ffmpeg.filter.video]) ->
[ffmpeg.filter.audio] * [ffmpeg.filter.video]

Arguments:

• inputs (of type int?, which defaults to null): number of input streams. (default: 2)
• map (of type string?, which defaults to null): input indexes to remap to outputs
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type [ffmpeg.filter.audio])
• (unlabeled) (of type [ffmpeg.filter.video])

ffmpeg.filter.atadenoise

Ffmpeg filter: Apply an Adaptive Temporal Averaging Denoiser.

Type:

(?0a : float?, ?0b : float?, ?1a : float?, ?1b : float?,
 ?2a : float?, ?2b : float?, ?s : int?, ?p : int?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• 0a (of type float?, which defaults to null): set threshold A for 1st plane. (default: 0.02)
• 0b (of type float?, which defaults to null): set threshold B for 1st plane. (default: 0.04)
• 1a (of type float?, which defaults to null): set threshold A for 2nd plane. (default: 0.02)
• 1b (of type float?, which defaults to null): set threshold B for 2nd plane. (default: 0.04)
• 2a (of type float?, which defaults to null): set threshold A for 3rd plane. (default: 0.02)
• 2b (of type float?, which defaults to null): set threshold B for 3rd plane. (default: 0.04)
• s (of type int?, which defaults to null): set how many frames to use. (default: 9)
• p (of type int?, which defaults to null): set what planes to filter. (default: 7)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.atempo

Ffmpeg filter: Adjust audio tempo.

Type:

(?tempo : float?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• tempo (of type float?, which defaults to null): set tempo scale factor. (default: 1.)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.atrim

Ffmpeg filter: Pick one continuous section from the input, drop the rest.

Type:

(?start : int?, ?starti : int?, ?end : int?,
 ?endi : int?, ?start_pts : int?, ?end_pts : int?,
 ?duration : int?, ?durationi : int?,
 ?start_sample : int?, ?end_sample : int?,
 ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• start (of type int?, which defaults to null): Timestamp of the first frame that should be passed. (default: 9223372036854775807)
• starti (of type int?, which defaults to null): Timestamp of the first frame that should be passed. (default: 9223372036854775807)
• end (of type int?, which defaults to null): Timestamp of the first frame that should be dropped again. (default: 9223372036854775807)
• endi (of type int?, which defaults to null): Timestamp of the first frame that should be dropped again. (default: 9223372036854775807)
• start_pts (of type int?, which defaults to null): Timestamp of the first frame that should be passed. (default: -9223372036854775808)
• end_pts (of type int?, which defaults to null): Timestamp of the first frame that should be dropped again. (default: -9223372036854775808)
• duration (of type int?, which defaults to null): Maximum duration of the output. (default: 0)
• durationi (of type int?, which defaults to null): Maximum duration of the output. (default: 0)
• start_sample (of type int?, which defaults to null): Number of the first audio sample that should be passed to the output. (default: -1)
• end_sample (of type int?, which defaults to null): Number of the first audio sample that should be dropped again. (default: 9223372036854775807)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.avectorscope

Ffmpeg filter: Convert input audio to vectorscope video output.

Type:

(?mode : int?, ?m : int?, ?rate : string?, ?r : string?,
 ?size : string?, ?s : string?, ?rc : int?, ?gc : int?,
 ?bc : int?, ?ac : int?, ?rf : int?, ?gf : int?,
 ?bf : int?, ?af : int?, ?zoom : float?, ?draw : int?,
 ?scale : int?, ?swap : bool?, ?mirror : int?,
 ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.video

Arguments:

• mode (of type int?, which defaults to null): set mode. (default: 0, possible values: 0 (lissajous), 1 (lissajous_xy), 2 (polar))
• m (of type int?, which defaults to null): set mode. (default: 0, possible values: 0 (lissajous), 1 (lissajous_xy), 2 (polar))
• rate (of type string?, which defaults to null): set video rate. (default: 25)
• r (of type string?, which defaults to null): set video rate. (default: 25)
• size (of type string?, which defaults to null): set video size. (default: 400x400)
• s (of type string?, which defaults to null): set video size. (default: 400x400)
• rc (of type int?, which defaults to null): set red contrast. (default: 40)
• gc (of type int?, which defaults to null): set green contrast. (default: 160)
• bc (of type int?, which defaults to null): set blue contrast. (default: 80)
• ac (of type int?, which defaults to null): set alpha contrast. (default: 255)
• rf (of type int?, which defaults to null): set red fade. (default: 15)
• gf (of type int?, which defaults to null): set green fade. (default: 10)
• bf (of type int?, which defaults to null): set blue fade. (default: 5)
• af (of type int?, which defaults to null): set alpha fade. (default: 5)
• zoom (of type float?, which defaults to null): set zoom factor. (default: 1.)
• draw (of type int?, which defaults to null): set draw mode. (default: 0, possible values: 0 (dot), 1 (line))
• scale (of type int?, which defaults to null): set amplitude scale mode. (default: 0, possible values: 0 (lin), 1 (sqrt), 2 (cbrt), 3 (log))
• swap (of type bool?, which defaults to null): swap x axis with y axis. (default: true)
• mirror (of type int?, which defaults to null): mirror axis. (default: 0, possible values: 0 (none), 1 (x), 2 (y), 3 (xy))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.avgblur

Ffmpeg filter: Apply Average Blur filter.

Type:

(?sizeX : int?, ?planes : int?, ?sizeY : int?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• sizeX (of type int?, which defaults to null): set horizontal size. (default: 1)
• planes (of type int?, which defaults to null): set planes to filter. (default: 15)
• sizeY (of type int?, which defaults to null): set vertical size. (default: 0)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.avgblur_opencl

Ffmpeg filter: Apply average blur filter

Type:

(?sizeX : int?, ?planes : int?, ?sizeY : int?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• sizeX (of type int?, which defaults to null): set horizontal size. (default: 1)
• planes (of type int?, which defaults to null): set planes to filter. (default: 15)
• sizeY (of type int?, which defaults to null): set vertical size. (default: 0)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.azmq

Ffmpeg filter: Receive commands through ZMQ and broker them to filters.

Type:

(?bind_address : string?, ?b : string?,
 ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• bind_address (of type string?, which defaults to null): set bind address. (default: tcp://*:5555)
• b (of type string?, which defaults to null): set bind address. (default: tcp://*:5555)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.bandpass

Ffmpeg filter: Apply a two-pole Butterworth band-pass filter.

Type:

(?frequency : float?, ?f : float?, ?width_type : int?,
 ?t : int?, ?width : float?, ?w : float?, ?csg : bool?,
 ?mix : float?, ?m : float?, ?channels : string?,
 ?c : string?, ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• frequency (of type float?, which defaults to null): set central frequency. (default: 3000.)
• f (of type float?, which defaults to null): set central frequency. (default: 3000.)
• width_type (of type int?, which defaults to null): set filter-width type. (default: 3, possible values: 1 (h), 3 (q), 2 (o), 4 (s), 5 (k))
• t (of type int?, which defaults to null): set filter-width type. (default: 3, possible values: 1 (h), 3 (q), 2 (o), 4 (s), 5 (k))
• width (of type float?, which defaults to null): set band-width. (default: 0.5)
• w (of type float?, which defaults to null): set band-width. (default: 0.5)
• csg (of type bool?, which defaults to null): use constant skirt gain. (default: false)
• mix (of type float?, which defaults to null): set mix. (default: 1.)
• m (of type float?, which defaults to null): set mix. (default: 1.)
• channels (of type string?, which defaults to null): set channels to filter
• c (of type string?, which defaults to null): set channels to filter
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.bandreject

Ffmpeg filter: Apply a two-pole Butterworth band-reject filter.

Type:

(?frequency : float?, ?f : float?, ?width_type : int?,
 ?t : int?, ?width : float?, ?w : float?, ?mix : float?,
 ?m : float?, ?channels : string?, ?c : string?,
 ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• frequency (of type float?, which defaults to null): set central frequency. (default: 3000.)
• f (of type float?, which defaults to null): set central frequency. (default: 3000.)
• width_type (of type int?, which defaults to null): set filter-width type. (default: 3, possible values: 1 (h), 3 (q), 2 (o), 4 (s), 5 (k))
• t (of type int?, which defaults to null): set filter-width type. (default: 3, possible values: 1 (h), 3 (q), 2 (o), 4 (s), 5 (k))
• width (of type float?, which defaults to null): set band-width. (default: 0.5)
• w (of type float?, which defaults to null): set band-width. (default: 0.5)
• mix (of type float?, which defaults to null): set mix. (default: 1.)
• m (of type float?, which defaults to null): set mix. (default: 1.)
• channels (of type string?, which defaults to null): set channels to filter
• c (of type string?, which defaults to null): set channels to filter
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.bass

Ffmpeg filter: Boost or cut lower frequencies.

Type:

(?frequency : float?, ?f : float?, ?width_type : int?,
 ?t : int?, ?width : float?, ?w : float?, ?gain : float?,
 ?g : float?, ?mix : float?, ?m : float?,
 ?channels : string?, ?c : string?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• frequency (of type float?, which defaults to null): set central frequency. (default: 100.)
• f (of type float?, which defaults to null): set central frequency. (default: 100.)
• width_type (of type int?, which defaults to null): set filter-width type. (default: 3, possible values: 1 (h), 3 (q), 2 (o), 4 (s), 5 (k))
• t (of type int?, which defaults to null): set filter-width type. (default: 3, possible values: 1 (h), 3 (q), 2 (o), 4 (s), 5 (k))
• width (of type float?, which defaults to null): set shelf transition steep. (default: 0.5)
• w (of type float?, which defaults to null): set shelf transition steep. (default: 0.5)
• gain (of type float?, which defaults to null): set gain. (default: 0.)
• g (of type float?, which defaults to null): set gain. (default: 0.)
• mix (of type float?, which defaults to null): set mix. (default: 1.)
• m (of type float?, which defaults to null): set mix. (default: 1.)
• channels (of type string?, which defaults to null): set channels to filter
• c (of type string?, which defaults to null): set channels to filter
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.bbox

Ffmpeg filter: Compute bounding box for each frame.

Type:

(?min_val : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• min_val (of type int?, which defaults to null): set minimum luminance value for bounding box. (default: 16)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.bench

Ffmpeg filter: Benchmark part of a filtergraph.

Type:

(?action : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• action (of type int?, which defaults to null): set action. (default: 0, possible values: 0 (start), 1 (stop))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.biquad

Ffmpeg filter: Apply a biquad IIR filter with the given coefficients.

Type:

(?a0 : float?, ?a1 : float?, ?a2 : float?, ?b0 : float?,
 ?b1 : float?, ?b2 : float?, ?mix : float?, ?m : float?,
 ?channels : string?, ?c : string?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• a0 (of type float?, which defaults to null): Default: 1.
• a1 (of type float?, which defaults to null): Default: 0.
• a2 (of type float?, which defaults to null): Default: 0.
• b0 (of type float?, which defaults to null): Default: 0.
• b1 (of type float?, which defaults to null): Default: 0.
• b2 (of type float?, which defaults to null): Default: 0.
• mix (of type float?, which defaults to null): set mix. (default: 1.)
• m (of type float?, which defaults to null): set mix. (default: 1.)
• channels (of type string?, which defaults to null): set channels to filter
• c (of type string?, which defaults to null): set channels to filter
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.bitplanenoise

Ffmpeg filter: Measure bit plane noise.

Type:

(?bitplane : int?, ?filter : bool?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• bitplane (of type int?, which defaults to null): set bit plane to use for measuring noise. (default: 1)
• filter (of type bool?, which defaults to null): show noisy pixels. (default: false)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.blackdetect

Ffmpeg filter: Detect video intervals that are (almost) black.

Type:

(?d : float?, ?black_min_duration : float?,
 ?picture_black_ratio_th : float?, ?pic_th : float?,
 ?pixel_black_th : float?, ?pix_th : float?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• d (of type float?, which defaults to null): set minimum detected black duration in seconds. (default: 2.)
• black_min_duration (of type float?, which defaults to null): set minimum detected black duration in seconds. (default: 2.)
• picture_black_ratio_th (of type float?, which defaults to null): set the picture black ratio threshold. (default: 0.98)
• pic_th (of type float?, which defaults to null): set the picture black ratio threshold. (default: 0.98)
• pixel_black_th (of type float?, which defaults to null): set the pixel black threshold. (default: 0.1)
• pix_th (of type float?, which defaults to null): set the pixel black threshold. (default: 0.1)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.blackframe

Ffmpeg filter: Detect frames that are (almost) black.

Type:

(?amount : int?, ?threshold : int?, ?thresh : int?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• amount (of type int?, which defaults to null): percentage of the pixels that have to be below the threshold for the frame to be considered black. (default: 98)
• threshold (of type int?, which defaults to null): threshold below which a pixel value is considered black. (default: 32)
• thresh (of type int?, which defaults to null): threshold below which a pixel value is considered black. (default: 32)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.blend

Ffmpeg filter: Blend two video frames into each other.

Type:

(?c0_mode : int?, ?c1_mode : int?, ?c2_mode : int?,
 ?c3_mode : int?, ?all_mode : int?, ?c0_expr : string?,
 ?c1_expr : string?, ?c2_expr : string?,
 ?c3_expr : string?, ?all_expr : string?,
 ?c0_opacity : float?, ?c1_opacity : float?,
 ?c2_opacity : float?, ?c3_opacity : float?,
 ?all_opacity : float?, ffmpeg.filter.graph,
 ffmpeg.filter.video, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• c0_mode (of type int?, which defaults to null): set component #0 blend mode. (default: 0, possible values: 1 (addition), 28 (addition128), 28 (grainmerge), 2 (and), 3 (average), 4 (burn), 5 (darken), 6 (difference), 7 (difference128), 7 (grainextract), 8 (divide), 9 (dodge), 10 (exclusion), 32 (extremity), 31 (freeze), 27 (glow), 11 (hardlight), 25 (hardmix), 30 (heat), 12 (lighten), 26 (linearlight), 13 (multiply), 29 (multiply128), 14 (negation), 0 (normal), 15 (or), 16 (overlay), 17 (phoenix), 18 (pinlight), 19 (reflect), 20 (screen), 21 (softlight), 22 (subtract), 23 (vividlight), 24 (xor))
• c1_mode (of type int?, which defaults to null): set component #1 blend mode. (default: 0, possible values: 1 (addition), 28 (addition128), 28 (grainmerge), 2 (and), 3 (average), 4 (burn), 5 (darken), 6 (difference), 7 (difference128), 7 (grainextract), 8 (divide), 9 (dodge), 10 (exclusion), 32 (extremity), 31 (freeze), 27 (glow), 11 (hardlight), 25 (hardmix), 30 (heat), 12 (lighten), 26 (linearlight), 13 (multiply), 29 (multiply128), 14 (negation), 0 (normal), 15 (or), 16 (overlay), 17 (phoenix), 18 (pinlight), 19 (reflect), 20 (screen), 21 (softlight), 22 (subtract), 23 (vividlight), 24 (xor))
• c2_mode (of type int?, which defaults to null): set component #2 blend mode. (default: 0, possible values: 1 (addition), 28 (addition128), 28 (grainmerge), 2 (and), 3 (average), 4 (burn), 5 (darken), 6 (difference), 7 (difference128), 7 (grainextract), 8 (divide), 9 (dodge), 10 (exclusion), 32 (extremity), 31 (freeze), 27 (glow), 11 (hardlight), 25 (hardmix), 30 (heat), 12 (lighten), 26 (linearlight), 13 (multiply), 29 (multiply128), 14 (negation), 0 (normal), 15 (or), 16 (overlay), 17 (phoenix), 18 (pinlight), 19 (reflect), 20 (screen), 21 (softlight), 22 (subtract), 23 (vividlight), 24 (xor))
• c3_mode (of type int?, which defaults to null): set component #3 blend mode. (default: 0, possible values: 1 (addition), 28 (addition128), 28 (grainmerge), 2 (and), 3 (average), 4 (burn), 5 (darken), 6 (difference), 7 (difference128), 7 (grainextract), 8 (divide), 9 (dodge), 10 (exclusion), 32 (extremity), 31 (freeze), 27 (glow), 11 (hardlight), 25 (hardmix), 30 (heat), 12 (lighten), 26 (linearlight), 13 (multiply), 29 (multiply128), 14 (negation), 0 (normal), 15 (or), 16 (overlay), 17 (phoenix), 18 (pinlight), 19 (reflect), 20 (screen), 21 (softlight), 22 (subtract), 23 (vividlight), 24 (xor))
• all_mode (of type int?, which defaults to null): set blend mode for all components. (default: -1, possible values: 1 (addition), 28 (addition128), 28 (grainmerge), 2 (and), 3 (average), 4 (burn), 5 (darken), 6 (difference), 7 (difference128), 7 (grainextract), 8 (divide), 9 (dodge), 10 (exclusion), 32 (extremity), 31 (freeze), 27 (glow), 11 (hardlight), 25 (hardmix), 30 (heat), 12 (lighten), 26 (linearlight), 13 (multiply), 29 (multiply128), 14 (negation), 0 (normal), 15 (or), 16 (overlay), 17 (phoenix), 18 (pinlight), 19 (reflect), 20 (screen), 21 (softlight), 22 (subtract), 23 (vividlight), 24 (xor))
• c0_expr (of type string?, which defaults to null): set color component #0 expression
• c1_expr (of type string?, which defaults to null): set color component #1 expression
• c2_expr (of type string?, which defaults to null): set color component #2 expression
• c3_expr (of type string?, which defaults to null): set color component #3 expression
• all_expr (of type string?, which defaults to null): set expression for all color components
• c0_opacity (of type float?, which defaults to null): set color component #0 opacity. (default: 1.)
• c1_opacity (of type float?, which defaults to null): set color component #1 opacity. (default: 1.)
• c2_opacity (of type float?, which defaults to null): set color component #2 opacity. (default: 1.)
• c3_opacity (of type float?, which defaults to null): set color component #3 opacity. (default: 1.)
• all_opacity (of type float?, which defaults to null): set opacity for all color components. (default: 1.)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.bm3d

Ffmpeg filter: Block-Matching 3D denoiser. This filter has dynamic inputs: last two arguments are lists of audio and video inputs. Total number of inputs is determined at runtime.

Type:

(?sigma : float?, ?block : int?, ?bstep : int?,
 ?group : int?, ?range : int?, ?mstep : int?,
 ?thmse : float?, ?hdthr : float?, ?estim : int?,
 ?ref : int?, ?planes : int?, ffmpeg.filter.graph,
 [ffmpeg.filter.audio], [ffmpeg.filter.video]) ->
ffmpeg.filter.video

Arguments:

• sigma (of type float?, which defaults to null): set denoising strength. (default: 1.)
• block (of type int?, which defaults to null): set log2(size) of local patch. (default: 4)
• bstep (of type int?, which defaults to null): set sliding step for processing blocks. (default: 4)
• group (of type int?, which defaults to null): set maximal number of similar blocks. (default: 1)
• range (of type int?, which defaults to null): set block matching range. (default: 9)
• mstep (of type int?, which defaults to null): set step for block matching. (default: 1)
• thmse (of type float?, which defaults to null): set threshold of mean square error for block matching. (default: 0.)
• hdthr (of type float?, which defaults to null): set hard threshold for 3D transfer domain. (default: 2.7)
• estim (of type int?, which defaults to null): set filtering estimation mode. (default: 0, possible values: 0 (basic), 1 (final))
• ref (of type int?, which defaults to null): have reference stream. (default: 0)
• planes (of type int?, which defaults to null): set planes to filter. (default: 7)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type [ffmpeg.filter.audio])
• (unlabeled) (of type [ffmpeg.filter.video])

ffmpeg.filter.boxblur

Ffmpeg filter: Blur the input.

Type:

(?luma_radius : string?, ?lr : string?,
 ?luma_power : int?, ?lp : int?,
 ?chroma_radius : string?, ?cr : string?,
 ?chroma_power : int?, ?cp : int?,
 ?alpha_radius : string?, ?ar : string?,
 ?alpha_power : int?, ?ap : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• luma_radius (of type string?, which defaults to null): Radius of the luma blurring box. (default: 2)
• lr (of type string?, which defaults to null): Radius of the luma blurring box. (default: 2)
• luma_power (of type int?, which defaults to null): How many times should the boxblur be applied to luma. (default: 2)
• lp (of type int?, which defaults to null): How many times should the boxblur be applied to luma. (default: 2)
• chroma_radius (of type string?, which defaults to null): Radius of the chroma blurring box
• cr (of type string?, which defaults to null): Radius of the chroma blurring box
• chroma_power (of type int?, which defaults to null): How many times should the boxblur be applied to chroma. (default: -1)
• cp (of type int?, which defaults to null): How many times should the boxblur be applied to chroma. (default: -1)
• alpha_radius (of type string?, which defaults to null): Radius of the alpha blurring box
• ar (of type string?, which defaults to null): Radius of the alpha blurring box
• alpha_power (of type int?, which defaults to null): How many times should the boxblur be applied to alpha. (default: -1)
• ap (of type int?, which defaults to null): How many times should the boxblur be applied to alpha. (default: -1)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.boxblur_opencl

Ffmpeg filter: Apply boxblur filter to input video

Type:

(?luma_radius : string?, ?lr : string?,
 ?luma_power : int?, ?lp : int?,
 ?chroma_radius : string?, ?cr : string?,
 ?chroma_power : int?, ?cp : int?,
 ?alpha_radius : string?, ?ar : string?,
 ?alpha_power : int?, ?ap : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• luma_radius (of type string?, which defaults to null): Radius of the luma blurring box. (default: 2)
• lr (of type string?, which defaults to null): Radius of the luma blurring box. (default: 2)
• luma_power (of type int?, which defaults to null): How many times should the boxblur be applied to luma. (default: 2)
• lp (of type int?, which defaults to null): How many times should the boxblur be applied to luma. (default: 2)
• chroma_radius (of type string?, which defaults to null): Radius of the chroma blurring box
• cr (of type string?, which defaults to null): Radius of the chroma blurring box
• chroma_power (of type int?, which defaults to null): How many times should the boxblur be applied to chroma. (default: -1)
• cp (of type int?, which defaults to null): How many times should the boxblur be applied to chroma. (default: -1)
• alpha_radius (of type string?, which defaults to null): Radius of the alpha blurring box
• ar (of type string?, which defaults to null): Radius of the alpha blurring box
• alpha_power (of type int?, which defaults to null): How many times should the boxblur be applied to alpha. (default: -1)
• ap (of type int?, which defaults to null): How many times should the boxblur be applied to alpha. (default: -1)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.bs2b

Ffmpeg filter: Bauer stereo-to-binaural filter.

Type:

(?profile : int?, ?fcut : int?, ?feed : int?,
 ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• profile (of type int?, which defaults to null): Apply a pre-defined crossfeed level. (default: 2949820, possible values: 2949820 (default), 3932860 (cmoy), 6226570 (jmeier))
• fcut (of type int?, which defaults to null): Set cut frequency (in Hz). (default: 0)
• feed (of type int?, which defaults to null): Set feed level (in Hz). (default: 0)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.bwdif

Ffmpeg filter: Deinterlace the input image.

Type:

(?mode : int?, ?parity : int?, ?deint : int?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• mode (of type int?, which defaults to null): specify the interlacing mode. (default: 1, possible values: 0 (send_frame), 1 (send_field))
• parity (of type int?, which defaults to null): specify the assumed picture field parity. (default: -1, possible values: 0 (tff), 1 (bff), -1 (auto))
• deint (of type int?, which defaults to null): specify which frames to deinterlace. (default: 0, possible values: 0 (all), 1 (interlaced))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.cellauto

Ffmpeg filter: Create pattern generated by an elementary cellular automaton.

Type:

(?filename : string?, ?f : string?, ?pattern : string?,
 ?p : string?, ?rate : string?, ?r : string?,
 ?size : string?, ?s : string?, ?rule : int?,
 ?random_fill_ratio : float?, ?ratio : float?,
 ?random_seed : int?, ?seed : int?, ?scroll : bool?,
 ?start_full : bool?, ?full : bool?, ?stitch : bool?,
 ffmpeg.filter.graph) -> ffmpeg.filter.video

Arguments:

• filename (of type string?, which defaults to null): read initial pattern from file
• f (of type string?, which defaults to null): read initial pattern from file
• pattern (of type string?, which defaults to null): set initial pattern
• p (of type string?, which defaults to null): set initial pattern
• rate (of type string?, which defaults to null): set video rate. (default: 25)
• r (of type string?, which defaults to null): set video rate. (default: 25)
• size (of type string?, which defaults to null): set video size
• s (of type string?, which defaults to null): set video size
• rule (of type int?, which defaults to null): set rule. (default: 110)
• random_fill_ratio (of type float?, which defaults to null): set fill ratio for filling initial grid randomly. (default: 0.61803398875)
• ratio (of type float?, which defaults to null): set fill ratio for filling initial grid randomly. (default: 0.61803398875)
• random_seed (of type int?, which defaults to null): set the seed for filling the initial grid randomly. (default: -1)
• seed (of type int?, which defaults to null): set the seed for filling the initial grid randomly. (default: -1)
• scroll (of type bool?, which defaults to null): scroll pattern downward. (default: true)
• start_full (of type bool?, which defaults to null): start filling the whole video. (default: false)
• full (of type bool?, which defaults to null): start filling the whole video. (default: true)
• stitch (of type bool?, which defaults to null): stitch boundaries. (default: true)
• (unlabeled) (of type ffmpeg.filter.graph)

ffmpeg.filter.channelmap

Ffmpeg filter: Remap audio channels.

Type:

(?map : string?, ?channel_layout : string?,
 ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• map (of type string?, which defaults to null): A comma-separated list of input channel numbers in output order.
• channel_layout (of type string?, which defaults to null): Output channel layout.
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.channelsplit

Ffmpeg filter: Split audio into per-channel streams. This filter has dynamic outputs: returned value is a tuple of audio and video outputs. Total number of outputs is determined at runtime.

Type:

(?channel_layout : string?, ?channels : string?,
 ffmpeg.filter.graph, ffmpeg.filter.audio) ->
[ffmpeg.filter.audio] * [ffmpeg.filter.video]

Arguments:

• channel_layout (of type string?, which defaults to null): Input channel layout.. (default: stereo)
• channels (of type string?, which defaults to null): Channels to extract.. (default: all)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.chorus

Ffmpeg filter: Add a chorus effect to the audio.

Type:

(?in_gain : float?, ?out_gain : float?,
 ?delays : string?, ?decays : string?, ?speeds : string?,
 ?depths : string?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• in_gain (of type float?, which defaults to null): set input gain. (default: 0.4)
• out_gain (of type float?, which defaults to null): set output gain. (default: 0.4)
• delays (of type string?, which defaults to null): set delays
• decays (of type string?, which defaults to null): set decays
• speeds (of type string?, which defaults to null): set speeds
• depths (of type string?, which defaults to null): set depths
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.chromahold

Ffmpeg filter: Turns a certain color range into gray.

Type:

(?color : string?, ?similarity : float?, ?blend : float?,
 ?yuv : bool?, ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• color (of type string?, which defaults to null): set the chromahold key color. (default: black)
• similarity (of type float?, which defaults to null): set the chromahold similarity value. (default: 0.01)
• blend (of type float?, which defaults to null): set the chromahold blend value. (default: 0.)
• yuv (of type bool?, which defaults to null): color parameter is in yuv instead of rgb. (default: false)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.chromakey

Ffmpeg filter: Turns a certain color into transparency. Operates on YUV colors.

Type:

(?color : string?, ?similarity : float?, ?blend : float?,
 ?yuv : bool?, ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• color (of type string?, which defaults to null): set the chromakey key color. (default: black)
• similarity (of type float?, which defaults to null): set the chromakey similarity value. (default: 0.01)
• blend (of type float?, which defaults to null): set the chromakey key blend value. (default: 0.)
• yuv (of type bool?, which defaults to null): color parameter is in yuv instead of rgb. (default: false)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.chromashift

Ffmpeg filter: Shift chroma.

Type:

(?cbh : int?, ?cbv : int?, ?crh : int?, ?crv : int?,
 ?edge : int?, ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• cbh (of type int?, which defaults to null): shift chroma-blue horizontally. (default: 0)
• cbv (of type int?, which defaults to null): shift chroma-blue vertically. (default: 0)
• crh (of type int?, which defaults to null): shift chroma-red horizontally. (default: 0)
• crv (of type int?, which defaults to null): shift chroma-red vertically. (default: 0)
• edge (of type int?, which defaults to null): set edge operation. (default: 0, possible values: 0 (smear), 1 (wrap))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.ciescope

Ffmpeg filter: Video CIE scope.

Type:

(?system : int?, ?cie : int?, ?gamuts : int?,
 ?size : int?, ?s : int?, ?intensity : float?,
 ?i : float?, ?contrast : float?, ?corrgamma : bool?,
 ?showwhite : bool?, ?gamma : float?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• system (of type int?, which defaults to null): set color system. (default: 7, possible values: 0 (ntsc), 0 (470m), 1 (ebu), 1 (470bg), 2 (smpte), 3 (240m), 4 (apple), 5 (widergb), 6 (cie1931), 7 (hdtv), 7 (rec709), 8 (uhdtv), 8 (rec2020))
• cie (of type int?, which defaults to null): set cie system. (default: 0, possible values: 0 (xyy), 1 (ucs), 2 (luv))
• gamuts (of type int?, which defaults to null): set what gamuts to draw. (default: 0, possible values: 1 (ntsc), 1 (470m), 2 (ebu), 2 (470bg), 4 (smpte), 8 (240m), 16 (apple), 32 (widergb), 64 (cie1931), 128 (hdtv), 128 (rec709), 256 (uhdtv), 256 (rec2020))
• size (of type int?, which defaults to null): set ciescope size. (default: 512)
• s (of type int?, which defaults to null): set ciescope size. (default: 512)
• intensity (of type float?, which defaults to null): set ciescope intensity. (default: 0.001)
• i (of type float?, which defaults to null): set ciescope intensity. (default: 0.001)
• contrast (of type float?, which defaults to null): Default: 0.75
• corrgamma (of type bool?, which defaults to null): Default: true
• showwhite (of type bool?, which defaults to null): Default: false
• gamma (of type float?, which defaults to null): Default: 2.6
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.codecview

Ffmpeg filter: Visualize information about some codecs.

Type:

(?mv : int?, ?qp : bool?, ?mv_type : int?, ?mvt : int?,
 ?frame_type : int?, ?ft : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• mv (of type int?, which defaults to null): set motion vectors to visualize. (default: 0, possible values: 1 (pf), 2 (bf), 4 (bb))
• qp (of type bool?, which defaults to null): Default: false
• mv_type (of type int?, which defaults to null): set motion vectors type. (default: 0, possible values: 1 (fp), 2 (bp))
• mvt (of type int?, which defaults to null): set motion vectors type. (default: 0, possible values: 1 (fp), 2 (bp))
• frame_type (of type int?, which defaults to null): set frame types to visualize motion vectors of. (default: 0, possible values: 1 (if), 2 (pf), 4 (bf))
• ft (of type int?, which defaults to null): set frame types to visualize motion vectors of. (default: 0, possible values: 1 (if), 2 (pf), 4 (bf))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.color

Ffmpeg filter: Provide an uniformly colored input.

Type:

(?color : string?, ?c : string?, ?size : string?,
 ?s : string?, ?rate : string?, ?r : string?,
 ?duration : int?, ?d : int?, ?sar : string?,
 ffmpeg.filter.graph) -> ffmpeg.filter.video

Arguments:

• color (of type string?, which defaults to null): set color. (default: black)
• c (of type string?, which defaults to null): set color. (default: black)
• size (of type string?, which defaults to null): set video size. (default: 320x240)
• s (of type string?, which defaults to null): set video size. (default: 320x240)
• rate (of type string?, which defaults to null): set video rate. (default: 25)
• r (of type string?, which defaults to null): set video rate. (default: 25)
• duration (of type int?, which defaults to null): set video duration. (default: -1)
• d (of type int?, which defaults to null): set video duration. (default: -1)
• sar (of type string?, which defaults to null): set video sample aspect ratio. (default: 1/1)
• (unlabeled) (of type ffmpeg.filter.graph)

ffmpeg.filter.colorbalance

Ffmpeg filter: Adjust the color balance.

Type:

(?rs : float?, ?gs : float?, ?bs : float?, ?rm : float?,
 ?gm : float?, ?bm : float?, ?rh : float?, ?gh : float?,
 ?bh : float?, ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• rs (of type float?, which defaults to null): set red shadows. (default: 0.)
• gs (of type float?, which defaults to null): set green shadows. (default: 0.)
• bs (of type float?, which defaults to null): set blue shadows. (default: 0.)
• rm (of type float?, which defaults to null): set red midtones. (default: 0.)
• gm (of type float?, which defaults to null): set green midtones. (default: 0.)
• bm (of type float?, which defaults to null): set blue midtones. (default: 0.)
• rh (of type float?, which defaults to null): set red highlights. (default: 0.)
• gh (of type float?, which defaults to null): set green highlights. (default: 0.)
• bh (of type float?, which defaults to null): set blue highlights. (default: 0.)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.colorchannelmixer

Ffmpeg filter: Adjust colors by mixing color channels.

Type:

(?rr : float?, ?rg : float?, ?rb : float?, ?ra : float?,
 ?gr : float?, ?gg : float?, ?gb : float?, ?ga : float?,
 ?br : float?, ?bg : float?, ?bb : float?, ?ba : float?,
 ?ar : float?, ?ag : float?, ?ab : float?, ?aa : float?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• rr (of type float?, which defaults to null): set the red gain for the red channel. (default: 1.)
• rg (of type float?, which defaults to null): set the green gain for the red channel. (default: 0.)
• rb (of type float?, which defaults to null): set the blue gain for the red channel. (default: 0.)
• ra (of type float?, which defaults to null): set the alpha gain for the red channel. (default: 0.)
• gr (of type float?, which defaults to null): set the red gain for the green channel. (default: 0.)
• gg (of type float?, which defaults to null): set the green gain for the green channel. (default: 1.)
• gb (of type float?, which defaults to null): set the blue gain for the green channel. (default: 0.)
• ga (of type float?, which defaults to null): set the alpha gain for the green channel. (default: 0.)
• br (of type float?, which defaults to null): set the red gain for the blue channel. (default: 0.)
• bg (of type float?, which defaults to null): set the green gain for the blue channel. (default: 0.)
• bb (of type float?, which defaults to null): set the blue gain for the blue channel. (default: 1.)
• ba (of type float?, which defaults to null): set the alpha gain for the blue channel. (default: 0.)
• ar (of type float?, which defaults to null): set the red gain for the alpha channel. (default: 0.)
• ag (of type float?, which defaults to null): set the green gain for the alpha channel. (default: 0.)
• ab (of type float?, which defaults to null): set the blue gain for the alpha channel. (default: 0.)
• aa (of type float?, which defaults to null): set the alpha gain for the alpha channel. (default: 1.)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.colorhold

Ffmpeg filter: Turns a certain color range into gray. Operates on RGB colors.

Type:

(?color : string?, ?similarity : float?, ?blend : float?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• color (of type string?, which defaults to null): set the colorhold key color. (default: black)
• similarity (of type float?, which defaults to null): set the colorhold similarity value. (default: 0.01)
• blend (of type float?, which defaults to null): set the colorhold blend value. (default: 0.)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.colorkey

Ffmpeg filter: Turns a certain color into transparency. Operates on RGB colors.

Type:

(?color : string?, ?similarity : float?, ?blend : float?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• color (of type string?, which defaults to null): set the colorkey key color. (default: black)
• similarity (of type float?, which defaults to null): set the colorkey similarity value. (default: 0.01)
• blend (of type float?, which defaults to null): set the colorkey key blend value. (default: 0.)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.colorkey_opencl

Ffmpeg filter: Turns a certain color into transparency. Operates on RGB colors.

Type:

(?color : string?, ?similarity : float?, ?blend : float?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• color (of type string?, which defaults to null): set the colorkey key color. (default: black)
• similarity (of type float?, which defaults to null): set the colorkey similarity value. (default: 0.01)
• blend (of type float?, which defaults to null): set the colorkey key blend value. (default: 0.)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.colorlevels

Ffmpeg filter: Adjust the color levels.

Type:

(?rimin : float?, ?gimin : float?, ?bimin : float?,
 ?aimin : float?, ?rimax : float?, ?gimax : float?,
 ?bimax : float?, ?aimax : float?, ?romin : float?,
 ?gomin : float?, ?bomin : float?, ?aomin : float?,
 ?romax : float?, ?gomax : float?, ?bomax : float?,
 ?aomax : float?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• rimin (of type float?, which defaults to null): set input red black point. (default: 0.)
• gimin (of type float?, which defaults to null): set input green black point. (default: 0.)
• bimin (of type float?, which defaults to null): set input blue black point. (default: 0.)
• aimin (of type float?, which defaults to null): set input alpha black point. (default: 0.)
• rimax (of type float?, which defaults to null): set input red white point. (default: 1.)
• gimax (of type float?, which defaults to null): set input green white point. (default: 1.)
• bimax (of type float?, which defaults to null): set input blue white point. (default: 1.)
• aimax (of type float?, which defaults to null): set input alpha white point. (default: 1.)
• romin (of type float?, which defaults to null): set output red black point. (default: 0.)
• gomin (of type float?, which defaults to null): set output green black point. (default: 0.)
• bomin (of type float?, which defaults to null): set output blue black point. (default: 0.)
• aomin (of type float?, which defaults to null): set output alpha black point. (default: 0.)
• romax (of type float?, which defaults to null): set output red white point. (default: 1.)
• gomax (of type float?, which defaults to null): set output green white point. (default: 1.)
• bomax (of type float?, which defaults to null): set output blue white point. (default: 1.)
• aomax (of type float?, which defaults to null): set output alpha white point. (default: 1.)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.colormatrix

Ffmpeg filter: Convert color matrix.

Type:

(?src : int?, ?dst : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• src (of type int?, which defaults to null): set source color matrix. (default: -1, possible values: 0 (bt709), 1 (fcc), 2 (bt601), 2 (bt470), 2 (bt470bg), 2 (smpte170m), 3 (smpte240m), 4 (bt2020))
• dst (of type int?, which defaults to null): set destination color matrix. (default: -1, possible values: 0 (bt709), 1 (fcc), 2 (bt601), 2 (bt470), 2 (bt470bg), 2 (smpte170m), 3 (smpte240m), 4 (bt2020))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.colorspace

Ffmpeg filter: Convert between colorspaces.

Type:

(?all : int?, ?space : int?, ?range : int?,
 ?primaries : int?, ?trc : int?, ?format : int?,
 ?fast : bool?, ?dither : int?, ?wpadapt : int?,
 ?iall : int?, ?ispace : int?, ?irange : int?,
 ?iprimaries : int?, ?itrc : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• all (of type int?, which defaults to null): Set all color properties together. (default: 0, possible values: 1 (bt470m), 2 (bt470bg), 3 (bt601-6-525), 4 (bt601-6-625), 5 (bt709), 6 (smpte170m), 7 (smpte240m), 8 (bt2020))
• space (of type int?, which defaults to null): Output colorspace. (default: 2, possible values: 1 (bt709), 4 (fcc), 5 (bt470bg), 6 (smpte170m), 7 (smpte240m), 8 (ycgco), 0 (gbr), 9 (bt2020nc), 9 (bt2020ncl))
• range (of type int?, which defaults to null): Output color range. (default: 0, possible values: 1 (tv), 1 (mpeg), 2 (pc), 2 (jpeg))
• primaries (of type int?, which defaults to null): Output color primaries. (default: 2, possible values: 1 (bt709), 4 (bt470m), 5 (bt470bg), 6 (smpte170m), 7 (smpte240m), 10 (smpte428), 8 (film), 11 (smpte431), 12 (smpte432), 9 (bt2020), 22 (jedec-p22))
• trc (of type int?, which defaults to null): Output transfer characteristics. (default: 2, possible values: 1 (bt709), 4 (bt470m), 4 (gamma22), 5 (bt470bg), 5 (gamma28), 6 (smpte170m), 7 (smpte240m), 13 (srgb), 13 (iec61966-2-1), 11 (xvycc), 11 (iec61966-2-4), 14 (bt2020-10), 15 (bt2020-12))
• format (of type int?, which defaults to null): Output pixel format. (default: -1, possible values: 0 (yuv420p), 64 (yuv420p10), 125 (yuv420p12), 4 (yuv422p), 66 (yuv422p10), 129 (yuv422p12), 5 (yuv444p), 70 (yuv444p10), 133 (yuv444p12))
• fast (of type bool?, which defaults to null): Ignore primary chromaticity and gamma correction. (default: false)
• dither (of type int?, which defaults to null): Dithering mode. (default: 0, possible values: 0 (none), 1 (fsb))
• wpadapt (of type int?, which defaults to null): Whitepoint adaptation method. (default: 0, possible values: 0 (bradford), 1 (vonkries), 2 (identity))
• iall (of type int?, which defaults to null): Set all input color properties together. (default: 0, possible values: 1 (bt470m), 2 (bt470bg), 3 (bt601-6-525), 4 (bt601-6-625), 5 (bt709), 6 (smpte170m), 7 (smpte240m), 8 (bt2020))
• ispace (of type int?, which defaults to null): Input colorspace. (default: 2, possible values: 1 (bt709), 4 (fcc), 5 (bt470bg), 6 (smpte170m), 7 (smpte240m), 8 (ycgco), 0 (gbr), 9 (bt2020nc), 9 (bt2020ncl))
• irange (of type int?, which defaults to null): Input color range. (default: 0, possible values: 1 (tv), 1 (mpeg), 2 (pc), 2 (jpeg))
• iprimaries (of type int?, which defaults to null): Input color primaries. (default: 2, possible values: 1 (bt709), 4 (bt470m), 5 (bt470bg), 6 (smpte170m), 7 (smpte240m), 10 (smpte428), 8 (film), 11 (smpte431), 12 (smpte432), 9 (bt2020), 22 (jedec-p22))
• itrc (of type int?, which defaults to null): Input transfer characteristics. (default: 2, possible values: 1 (bt709), 4 (bt470m), 4 (gamma22), 5 (bt470bg), 5 (gamma28), 6 (smpte170m), 7 (smpte240m), 13 (srgb), 13 (iec61966-2-1), 11 (xvycc), 11 (iec61966-2-4), 14 (bt2020-10), 15 (bt2020-12))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.compand

Ffmpeg filter: Compress or expand audio dynamic range.

Type:

(?attacks : string?, ?decays : string?,
 ?points : string?, ?soft-knee : float?, ?gain : float?,
 ?volume : float?, ?delay : float?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• attacks (of type string?, which defaults to null): set time over which increase of volume is determined. (default: 0)
• decays (of type string?, which defaults to null): set time over which decrease of volume is determined. (default: 0.8)
• points (of type string?, which defaults to null): set points of transfer function. (default: -70/-70|-60/-20|1/0)
• soft-knee (of type float?, which defaults to null): set soft-knee. (default: 0.01)
• gain (of type float?, which defaults to null): set output gain. (default: 0.)
• volume (of type float?, which defaults to null): set initial volume. (default: 0.)
• delay (of type float?, which defaults to null): set delay for samples before sending them to volume adjuster. (default: 0.)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.compensationdelay

Ffmpeg filter: Audio Compensation Delay Line.

Type:

(?mm : int?, ?cm : int?, ?m : int?, ?dry : float?,
 ?wet : float?, ?temp : int?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• mm (of type int?, which defaults to null): set mm distance. (default: 0)
• cm (of type int?, which defaults to null): set cm distance. (default: 0)
• m (of type int?, which defaults to null): set meter distance. (default: 0)
• dry (of type float?, which defaults to null): set dry amount. (default: 0.)
• wet (of type float?, which defaults to null): set wet amount. (default: 1.)
• temp (of type int?, which defaults to null): set temperature °C. (default: 20)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.concat

Ffmpeg filter: Concatenate audio and video streams. This filter has dynamic inputs: last two arguments are lists of audio and video inputs. Total number of inputs is determined at runtime. This filter has dynamic outputs: returned value is a tuple of audio and video outputs. Total number of outputs is determined at runtime.

Type:

(?n : int?, ?v : int?, ?a : int?, ?unsafe : bool?,
 ffmpeg.filter.graph, [ffmpeg.filter.audio],
 [ffmpeg.filter.video]) ->
[ffmpeg.filter.audio] * [ffmpeg.filter.video]

Arguments:

• n (of type int?, which defaults to null): specify the number of segments. (default: 2)
• v (of type int?, which defaults to null): specify the number of video streams. (default: 1)
• a (of type int?, which defaults to null): specify the number of audio streams. (default: 0)
• unsafe (of type bool?, which defaults to null): enable unsafe mode. (default: false)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type [ffmpeg.filter.audio])
• (unlabeled) (of type [ffmpeg.filter.video])

ffmpeg.filter.convolution

Ffmpeg filter: Apply convolution filter.

Type:

(?0m : string?, ?1m : string?, ?2m : string?,
 ?3m : string?, ?0rdiv : float?, ?1rdiv : float?,
 ?2rdiv : float?, ?3rdiv : float?, ?0bias : float?,
 ?1bias : float?, ?2bias : float?, ?3bias : float?,
 ?0mode : int?, ?1mode : int?, ?2mode : int?,
 ?3mode : int?, ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• 0m (of type string?, which defaults to null): set matrix for 1st plane. (default: 0 0 0 0 1 0 0 0 0)
• 1m (of type string?, which defaults to null): set matrix for 2nd plane. (default: 0 0 0 0 1 0 0 0 0)
• 2m (of type string?, which defaults to null): set matrix for 3rd plane. (default: 0 0 0 0 1 0 0 0 0)
• 3m (of type string?, which defaults to null): set matrix for 4th plane. (default: 0 0 0 0 1 0 0 0 0)
• 0rdiv (of type float?, which defaults to null): set rdiv for 1st plane. (default: 0.)
• 1rdiv (of type float?, which defaults to null): set rdiv for 2nd plane. (default: 0.)
• 2rdiv (of type float?, which defaults to null): set rdiv for 3rd plane. (default: 0.)
• 3rdiv (of type float?, which defaults to null): set rdiv for 4th plane. (default: 0.)
• 0bias (of type float?, which defaults to null): set bias for 1st plane. (default: 0.)
• 1bias (of type float?, which defaults to null): set bias for 2nd plane. (default: 0.)
• 2bias (of type float?, which defaults to null): set bias for 3rd plane. (default: 0.)
• 3bias (of type float?, which defaults to null): set bias for 4th plane. (default: 0.)
• 0mode (of type int?, which defaults to null): set matrix mode for 1st plane. (default: 0, possible values: 0 (square), 1 (row), 2 (column))
• 1mode (of type int?, which defaults to null): set matrix mode for 2nd plane. (default: 0, possible values: 0 (square), 1 (row), 2 (column))
• 2mode (of type int?, which defaults to null): set matrix mode for 3rd plane. (default: 0, possible values: 0 (square), 1 (row), 2 (column))
• 3mode (of type int?, which defaults to null): set matrix mode for 4th plane. (default: 0, possible values: 0 (square), 1 (row), 2 (column))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.convolution_opencl

Ffmpeg filter: Apply convolution mask to input video

Type:

(?0m : string?, ?1m : string?, ?2m : string?,
 ?3m : string?, ?0rdiv : float?, ?1rdiv : float?,
 ?2rdiv : float?, ?3rdiv : float?, ?0bias : float?,
 ?1bias : float?, ?2bias : float?, ?3bias : float?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• 0m (of type string?, which defaults to null): set matrix for 2nd plane. (default: 0 0 0 0 1 0 0 0 0)
• 1m (of type string?, which defaults to null): set matrix for 2nd plane. (default: 0 0 0 0 1 0 0 0 0)
• 2m (of type string?, which defaults to null): set matrix for 3rd plane. (default: 0 0 0 0 1 0 0 0 0)
• 3m (of type string?, which defaults to null): set matrix for 4th plane. (default: 0 0 0 0 1 0 0 0 0)
• 0rdiv (of type float?, which defaults to null): set rdiv for 1nd plane. (default: 1.)
• 1rdiv (of type float?, which defaults to null): set rdiv for 2nd plane. (default: 1.)
• 2rdiv (of type float?, which defaults to null): set rdiv for 3rd plane. (default: 1.)
• 3rdiv (of type float?, which defaults to null): set rdiv for 4th plane. (default: 1.)
• 0bias (of type float?, which defaults to null): set bias for 1st plane. (default: 0.)
• 1bias (of type float?, which defaults to null): set bias for 2nd plane. (default: 0.)
• 2bias (of type float?, which defaults to null): set bias for 3rd plane. (default: 0.)
• 3bias (of type float?, which defaults to null): set bias for 4th plane. (default: 0.)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.convolve

Ffmpeg filter: Convolve first video stream with second video stream.

Type:

(?planes : int?, ?impulse : int?, ?noise : float?,
 ffmpeg.filter.graph, ffmpeg.filter.video,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• planes (of type int?, which defaults to null): set planes to convolve. (default: 7)
• impulse (of type int?, which defaults to null): when to process impulses. (default: 1, possible values: 0 (first), 1 (all))
• noise (of type float?, which defaults to null): set noise. (default: 1e-07)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.copy

Ffmpeg filter: Copy the input video unchanged to the output.

Type:

(ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.cover_rect

Ffmpeg filter: Find and cover a user specified object.

Type:

(?cover : string?, ?mode : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• cover (of type string?, which defaults to null): cover bitmap filename
• mode (of type int?, which defaults to null): set removal mode. (default: 1, possible values: 0 (cover), 1 (blur))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.crop

Ffmpeg filter: Crop the input video.

Type:

(?out_w : string?, ?w : string?, ?out_h : string?,
 ?h : string?, ?x : string?, ?y : string?,
 ?keep_aspect : bool?, ?exact : bool?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• out_w (of type string?, which defaults to null): set the width crop area expression. (default: iw)
• w (of type string?, which defaults to null): set the width crop area expression. (default: iw)
• out_h (of type string?, which defaults to null): set the height crop area expression. (default: ih)
• h (of type string?, which defaults to null): set the height crop area expression. (default: ih)
• x (of type string?, which defaults to null): set the x crop area expression. (default: (in_w-out_w)/2)
• y (of type string?, which defaults to null): set the y crop area expression. (default: (in_h-out_h)/2)
• keep_aspect (of type bool?, which defaults to null): keep aspect ratio. (default: false)
• exact (of type bool?, which defaults to null): do exact cropping. (default: false)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.cropdetect

Ffmpeg filter: Auto-detect crop size.

Type:

(?limit : float?, ?round : int?, ?reset : int?,
 ?reset_count : int?, ?max_outliers : int?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• limit (of type float?, which defaults to null): Threshold below which the pixel is considered black. (default: 0.0941176470588)
• round (of type int?, which defaults to null): Value by which the width/height should be divisible. (default: 16)
• reset (of type int?, which defaults to null): Recalculate the crop area after this many frames. (default: 0)
• reset_count (of type int?, which defaults to null): Recalculate the crop area after this many frames. (default: 0)
• max_outliers (of type int?, which defaults to null): Threshold count of outliers. (default: 0)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.crossfeed

Ffmpeg filter: Apply headphone crossfeed filter.

Type:

(?strength : float?, ?range : float?, ?level_in : float?,
 ?level_out : float?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• strength (of type float?, which defaults to null): set crossfeed strength. (default: 0.2)
• range (of type float?, which defaults to null): set soundstage wideness. (default: 0.5)
• level_in (of type float?, which defaults to null): set level in. (default: 0.9)
• level_out (of type float?, which defaults to null): set level out. (default: 1.)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.crystalizer

Ffmpeg filter: Simple expand audio dynamic range filter.

Type:

(?i : float?, ?c : bool?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• i (of type float?, which defaults to null): set intensity. (default: 2.)
• c (of type bool?, which defaults to null): enable clipping. (default: true)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.cue

Ffmpeg filter: Delay filtering to match a cue.

Type:

(?cue : int?, ?preroll : int?, ?buffer : int?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• cue (of type int?, which defaults to null): cue unix timestamp in microseconds. (default: 0)
• preroll (of type int?, which defaults to null): preroll duration in seconds. (default: 0)
• buffer (of type int?, which defaults to null): buffer duration in seconds. (default: 0)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.curves

Ffmpeg filter: Adjust components curves.

Type:

(?preset : int?, ?master : string?, ?m : string?,
 ?red : string?, ?r : string?, ?green : string?,
 ?g : string?, ?blue : string?, ?b : string?,
 ?all : string?, ?psfile : string?, ?plot : string?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• preset (of type int?, which defaults to null): select a color curves preset. (default: 0, possible values: 0 (none), 1 (color_negative), 2 (cross_process), 3 (darker), 4 (increase_contrast), 5 (lighter), 6 (linear_contrast), 7 (medium_contrast), 8 (negative), 9 (strong_contrast), 10 (vintage))
• master (of type string?, which defaults to null): set master points coordinates
• m (of type string?, which defaults to null): set master points coordinates
• red (of type string?, which defaults to null): set red points coordinates
• r (of type string?, which defaults to null): set red points coordinates
• green (of type string?, which defaults to null): set green points coordinates
• g (of type string?, which defaults to null): set green points coordinates
• blue (of type string?, which defaults to null): set blue points coordinates
• b (of type string?, which defaults to null): set blue points coordinates
• all (of type string?, which defaults to null): set points coordinates for all components
• psfile (of type string?, which defaults to null): set Photoshop curves file name
• plot (of type string?, which defaults to null): save Gnuplot script of the curves in specified file
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.datascope

Ffmpeg filter: Video data analysis.

Type:

(?size : string?, ?s : string?, ?x : int?, ?y : int?,
 ?mode : int?, ?axis : bool?, ?opacity : float?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• size (of type string?, which defaults to null): set output size. (default: hd720)
• s (of type string?, which defaults to null): set output size. (default: hd720)
• x (of type int?, which defaults to null): set x offset. (default: 0)
• y (of type int?, which defaults to null): set y offset. (default: 0)
• mode (of type int?, which defaults to null): set scope mode. (default: 0, possible values: 0 (mono), 1 (color), 2 (color2))
• axis (of type bool?, which defaults to null): draw column/row numbers. (default: false)
• opacity (of type float?, which defaults to null): set background opacity. (default: 0.75)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.dcshift

Ffmpeg filter: Apply a DC shift to the audio.

Type:

(?shift : float?, ?limitergain : float?,
 ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• shift (of type float?, which defaults to null): set DC shift. (default: 0.)
• limitergain (of type float?, which defaults to null): set limiter gain. (default: 0.)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.dctdnoiz

Ffmpeg filter: Denoise frames using 2D DCT.

Type:

(?sigma : float?, ?s : float?, ?overlap : int?,
 ?expr : string?, ?e : string?, ?n : int?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• sigma (of type float?, which defaults to null): set noise sigma constant. (default: 0.)
• s (of type float?, which defaults to null): set noise sigma constant. (default: 0.)
• overlap (of type int?, which defaults to null): set number of block overlapping pixels. (default: -1)
• expr (of type string?, which defaults to null): set coefficient factor expression
• e (of type string?, which defaults to null): set coefficient factor expression
• n (of type int?, which defaults to null): set the block size, expressed in bits. (default: 3)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.deband

Ffmpeg filter: Debands video.

Type:

(?1thr : float?, ?2thr : float?, ?3thr : float?,
 ?4thr : float?, ?range : int?, ?r : int?,
 ?direction : float?, ?d : float?, ?blur : bool?,
 ?b : bool?, ?coupling : bool?, ?c : bool?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• 1thr (of type float?, which defaults to null): set 1st plane threshold. (default: 0.02)
• 2thr (of type float?, which defaults to null): set 2nd plane threshold. (default: 0.02)
• 3thr (of type float?, which defaults to null): set 3rd plane threshold. (default: 0.02)
• 4thr (of type float?, which defaults to null): set 4th plane threshold. (default: 0.02)
• range (of type int?, which defaults to null): set range. (default: 16)
• r (of type int?, which defaults to null): set range. (default: 16)
• direction (of type float?, which defaults to null): set direction. (default: 6.28318530718)
• d (of type float?, which defaults to null): set direction. (default: 6.28318530718)
• blur (of type bool?, which defaults to null): set blur. (default: true)
• b (of type bool?, which defaults to null): set blur. (default: true)
• coupling (of type bool?, which defaults to null): set plane coupling. (default: false)
• c (of type bool?, which defaults to null): set plane coupling. (default: false)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.deblock

Ffmpeg filter: Deblock video.

Type:

(?filter : int?, ?block : int?, ?alpha : float?,
 ?beta : float?, ?gamma : float?, ?delta : float?,
 ?planes : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• filter (of type int?, which defaults to null): set type of filter. (default: 1, possible values: 0 (weak), 1 (strong))
• block (of type int?, which defaults to null): set size of block. (default: 8)
• alpha (of type float?, which defaults to null): set 1st detection threshold. (default: 0.098)
• beta (of type float?, which defaults to null): set 2nd detection threshold. (default: 0.05)
• gamma (of type float?, which defaults to null): set 3rd detection threshold. (default: 0.05)
• delta (of type float?, which defaults to null): set 4th detection threshold. (default: 0.05)
• planes (of type int?, which defaults to null): set planes to filter. (default: 15)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.decimate

Ffmpeg filter: Decimate frames (post field matching filter). This filter has dynamic inputs: last two arguments are lists of audio and video inputs. Total number of inputs is determined at runtime.

Type:

(?cycle : int?, ?dupthresh : float?, ?scthresh : float?,
 ?blockx : int?, ?blocky : int?, ?ppsrc : bool?,
 ?chroma : bool?, ffmpeg.filter.graph,
 [ffmpeg.filter.audio], [ffmpeg.filter.video]) ->
ffmpeg.filter.video

Arguments:

• cycle (of type int?, which defaults to null): set the number of frame from which one will be dropped. (default: 5)
• dupthresh (of type float?, which defaults to null): set duplicate threshold. (default: 1.1)
• scthresh (of type float?, which defaults to null): set scene change threshold. (default: 15.)
• blockx (of type int?, which defaults to null): set the size of the x-axis blocks used during metric calculations. (default: 32)
• blocky (of type int?, which defaults to null): set the size of the y-axis blocks used during metric calculations. (default: 32)
• ppsrc (of type bool?, which defaults to null): mark main input as a pre-processed input and activate clean source input stream. (default: false)
• chroma (of type bool?, which defaults to null): set whether or not chroma is considered in the metric calculations. (default: true)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type [ffmpeg.filter.audio])
• (unlabeled) (of type [ffmpeg.filter.video])

ffmpeg.filter.deconvolve

Ffmpeg filter: Deconvolve first video stream with second video stream.

Type:

(?planes : int?, ?impulse : int?, ?noise : float?,
 ffmpeg.filter.graph, ffmpeg.filter.video,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• planes (of type int?, which defaults to null): set planes to deconvolve. (default: 7)
• impulse (of type int?, which defaults to null): when to process impulses. (default: 1, possible values: 0 (first), 1 (all))
• noise (of type float?, which defaults to null): set noise. (default: 1e-07)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.dedot

Ffmpeg filter: Reduce cross-luminance and cross-color.

Type:

(?m : int?, ?lt : float?, ?tl : float?, ?tc : float?,
 ?ct : float?, ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• m (of type int?, which defaults to null): set filtering mode. (default: 3, possible values: 1 (dotcrawl), 2 (rainbows))
• lt (of type float?, which defaults to null): set spatial luma threshold. (default: 0.079)
• tl (of type float?, which defaults to null): set tolerance for temporal luma. (default: 0.079)
• tc (of type float?, which defaults to null): set tolerance for chroma temporal variation. (default: 0.058)
• ct (of type float?, which defaults to null): set temporal chroma threshold. (default: 0.019)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.deesser

Ffmpeg filter: Apply de-essing to the audio.

Type:

(?i : float?, ?m : float?, ?f : float?, ?s : int?,
 ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• i (of type float?, which defaults to null): set intensity. (default: 0.)
• m (of type float?, which defaults to null): set max deessing. (default: 0.5)
• f (of type float?, which defaults to null): set frequency. (default: 0.5)
• s (of type int?, which defaults to null): set output mode. (default: 1, possible values: 0 (i), 1 (o), 2 (e))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.deflate

Ffmpeg filter: Apply deflate effect.

Type:

(?threshold0 : int?, ?threshold1 : int?,
 ?threshold2 : int?, ?threshold3 : int?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• threshold0 (of type int?, which defaults to null): set threshold for 1st plane. (default: 65535)
• threshold1 (of type int?, which defaults to null): set threshold for 2nd plane. (default: 65535)
• threshold2 (of type int?, which defaults to null): set threshold for 3rd plane. (default: 65535)
• threshold3 (of type int?, which defaults to null): set threshold for 4th plane. (default: 65535)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.deflicker

Ffmpeg filter: Remove temporal frame luminance variations.

Type:

(?size : int?, ?s : int?, ?mode : int?, ?m : int?,
 ?bypass : bool?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• size (of type int?, which defaults to null): set how many frames to use. (default: 5)
• s (of type int?, which defaults to null): set how many frames to use. (default: 5)
• mode (of type int?, which defaults to null): set how to smooth luminance. (default: 0, possible values: 0 (am), 1 (gm), 2 (hm), 3 (qm), 4 (cm), 5 (pm), 6 (median))
• m (of type int?, which defaults to null): set how to smooth luminance. (default: 0, possible values: 0 (am), 1 (gm), 2 (hm), 3 (qm), 4 (cm), 5 (pm), 6 (median))
• bypass (of type bool?, which defaults to null): leave frames unchanged. (default: false)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.deinterlace_vaapi

Ffmpeg filter: Deinterlacing of VAAPI surfaces

Type:

(?mode : int?, ?rate : int?, ?auto : int?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• mode (of type int?, which defaults to null): Deinterlacing mode. (default: 0, possible values: 0 (default), 1 (bob), 2 (weave), 3 (motion_adaptive), 4 (motion_compensated))
• rate (of type int?, which defaults to null): Generate output at frame rate or field rate. (default: 1, possible values: 1 (frame), 2 (field))
• auto (of type int?, which defaults to null): Only deinterlace fields, passing frames through unchanged. (default: 0)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.dejudder

Ffmpeg filter: Remove judder produced by pullup.

Type:

(?cycle : int?, ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• cycle (of type int?, which defaults to null): set the length of the cycle to use for dejuddering. (default: 4)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.delogo

Ffmpeg filter: Remove logo from input video.

Type:

(?x : int?, ?y : int?, ?w : int?, ?h : int?,
 ?show : bool?, ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• x (of type int?, which defaults to null): set logo x position. (default: -1)
• y (of type int?, which defaults to null): set logo y position. (default: -1)
• w (of type int?, which defaults to null): set logo width. (default: -1)
• h (of type int?, which defaults to null): set logo height. (default: -1)
• show (of type bool?, which defaults to null): show delogo area. (default: false)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.denoise_vaapi

Ffmpeg filter: VAAPI VPP for de-noise

Type:

(?denoise : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• denoise (of type int?, which defaults to null): denoise level. (default: 0)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.derain

Ffmpeg filter: Apply derain filter to the input.

Type:

(?dnn_backend : int?, ?model : string?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• dnn_backend (of type int?, which defaults to null): DNN backend. (default: 0, possible values: 0 (native))
• model (of type string?, which defaults to null): path to model file
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.deshake

Ffmpeg filter: Stabilize shaky video.

Type:

(?x : int?, ?y : int?, ?w : int?, ?h : int?, ?rx : int?,
 ?ry : int?, ?edge : int?, ?blocksize : int?,
 ?contrast : int?, ?search : int?, ?filename : string?,
 ?opencl : bool?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• x (of type int?, which defaults to null): set x for the rectangular search area. (default: -1)
• y (of type int?, which defaults to null): set y for the rectangular search area. (default: -1)
• w (of type int?, which defaults to null): set width for the rectangular search area. (default: -1)
• h (of type int?, which defaults to null): set height for the rectangular search area. (default: -1)
• rx (of type int?, which defaults to null): set x for the rectangular search area. (default: 16)
• ry (of type int?, which defaults to null): set y for the rectangular search area. (default: 16)
• edge (of type int?, which defaults to null): set edge mode. (default: 3, possible values: 0 (blank), 1 (original), 2 (clamp), 3 (mirror))
• blocksize (of type int?, which defaults to null): set motion search blocksize. (default: 8)
• contrast (of type int?, which defaults to null): set contrast threshold for blocks. (default: 125)
• search (of type int?, which defaults to null): set search strategy. (default: 0, possible values: 0 (exhaustive), 1 (less))
• filename (of type string?, which defaults to null): set motion search detailed log file name
• opencl (of type bool?, which defaults to null): ignored. (default: false)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.despill

Ffmpeg filter: Despill video.

Type:

(?type : int?, ?mix : float?, ?expand : float?,
 ?red : float?, ?green : float?, ?blue : float?,
 ?brightness : float?, ?alpha : bool?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• type (of type int?, which defaults to null): set the screen type. (default: 0, possible values: 0 (green), 1 (blue))
• mix (of type float?, which defaults to null): set the spillmap mix. (default: 0.5)
• expand (of type float?, which defaults to null): set the spillmap expand. (default: 0.)
• red (of type float?, which defaults to null): set red scale. (default: 0.)
• green (of type float?, which defaults to null): set green scale. (default: -1.)
• blue (of type float?, which defaults to null): set blue scale. (default: 0.)
• brightness (of type float?, which defaults to null): set brightness. (default: 0.)
• alpha (of type bool?, which defaults to null): change alpha component. (default: false)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.detelecine

Ffmpeg filter: Apply an inverse telecine pattern.

Type:

(?first_field : int?, ?pattern : string?,
 ?start_frame : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• first_field (of type int?, which defaults to null): select first field. (default: 0, possible values: 0 (top), 0 (t), 1 (bottom), 1 (b))
• pattern (of type string?, which defaults to null): pattern that describe for how many fields a frame is to be displayed. (default: 23)
• start_frame (of type int?, which defaults to null): position of first frame with respect to the pattern if stream is cut. (default: 0)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.dilation

Ffmpeg filter: Apply dilation effect.

Type:

(?threshold0 : int?, ?threshold1 : int?,
 ?threshold2 : int?, ?threshold3 : int?,
 ?coordinates : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• threshold0 (of type int?, which defaults to null): set threshold for 1st plane. (default: 65535)
• threshold1 (of type int?, which defaults to null): set threshold for 2nd plane. (default: 65535)
• threshold2 (of type int?, which defaults to null): set threshold for 3rd plane. (default: 65535)
• threshold3 (of type int?, which defaults to null): set threshold for 4th plane. (default: 65535)
• coordinates (of type int?, which defaults to null): set coordinates. (default: 255)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.dilation_opencl

Ffmpeg filter: Apply dilation effect

Type:

(?threshold0 : float?, ?threshold1 : float?,
 ?threshold2 : float?, ?threshold3 : float?,
 ?coordinates : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• threshold0 (of type float?, which defaults to null): set threshold for 1st plane. (default: 65535.)
• threshold1 (of type float?, which defaults to null): set threshold for 2nd plane. (default: 65535.)
• threshold2 (of type float?, which defaults to null): set threshold for 3rd plane. (default: 65535.)
• threshold3 (of type float?, which defaults to null): set threshold for 4th plane. (default: 65535.)
• coordinates (of type int?, which defaults to null): set coordinates. (default: 255)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.displace

Ffmpeg filter: Displace pixels.

Type:

(?edge : int?, ffmpeg.filter.graph, ffmpeg.filter.video,
 ffmpeg.filter.video, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• edge (of type int?, which defaults to null): set edge mode. (default: 1, possible values: 0 (blank), 1 (smear), 2 (wrap), 3 (mirror))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)
• (unlabeled) (of type ffmpeg.filter.video)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.doubleweave

Ffmpeg filter: Weave input video fields into double number of frames.

Type:

(?first_field : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• first_field (of type int?, which defaults to null): set first field. (default: 0, possible values: 0 (top), 0 (t), 1 (bottom), 1 (b))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.drawbox

Ffmpeg filter: Draw a colored box on the input video.

Type:

(?x : string?, ?y : string?, ?width : string?,
 ?w : string?, ?height : string?, ?h : string?,
 ?color : string?, ?c : string?, ?thickness : string?,
 ?t : string?, ?replace : bool?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• x (of type string?, which defaults to null): set horizontal position of the left box edge. (default: 0)
• y (of type string?, which defaults to null): set vertical position of the top box edge. (default: 0)
• width (of type string?, which defaults to null): set width of the box. (default: 0)
• w (of type string?, which defaults to null): set width of the box. (default: 0)
• height (of type string?, which defaults to null): set height of the box. (default: 0)
• h (of type string?, which defaults to null): set height of the box. (default: 0)
• color (of type string?, which defaults to null): set color of the box. (default: black)
• c (of type string?, which defaults to null): set color of the box. (default: black)
• thickness (of type string?, which defaults to null): set the box thickness. (default: 3)
• t (of type string?, which defaults to null): set the box thickness. (default: 3)
• replace (of type bool?, which defaults to null): replace color & alpha. (default: false)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.drawgraph

Ffmpeg filter: Draw a graph using input video metadata.

Type:

(?m1 : string?, ?fg1 : string?, ?m2 : string?,
 ?fg2 : string?, ?m3 : string?, ?fg3 : string?,
 ?m4 : string?, ?fg4 : string?, ?bg : string?,
 ?min : float?, ?max : float?, ?mode : int?,
 ?slide : int?, ?size : string?, ?s : string?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• m1 (of type string?, which defaults to null): set 1st metadata key. (default: )
• fg1 (of type string?, which defaults to null): set 1st foreground color expression. (default: 0xffff0000)
• m2 (of type string?, which defaults to null): set 2nd metadata key. (default: )
• fg2 (of type string?, which defaults to null): set 2nd foreground color expression. (default: 0xff00ff00)
• m3 (of type string?, which defaults to null): set 3rd metadata key. (default: )
• fg3 (of type string?, which defaults to null): set 3rd foreground color expression. (default: 0xffff00ff)
• m4 (of type string?, which defaults to null): set 4th metadata key. (default: )
• fg4 (of type string?, which defaults to null): set 4th foreground color expression. (default: 0xffffff00)
• bg (of type string?, which defaults to null): set background color. (default: white)
• min (of type float?, which defaults to null): set minimal value. (default: -1.)
• max (of type float?, which defaults to null): set maximal value. (default: 1.)
• mode (of type int?, which defaults to null): set graph mode. (default: 2, possible values: 0 (bar), 1 (dot), 2 (line))
• slide (of type int?, which defaults to null): set slide mode. (default: 0, possible values: 0 (frame), 1 (replace), 2 (scroll), 3 (rscroll), 4 (picture))
• size (of type string?, which defaults to null): set graph size. (default: 900x256)
• s (of type string?, which defaults to null): set graph size. (default: 900x256)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.drawgrid

Ffmpeg filter: Draw a colored grid on the input video.

Type:

(?x : string?, ?y : string?, ?width : string?,
 ?w : string?, ?height : string?, ?h : string?,
 ?color : string?, ?c : string?, ?thickness : string?,
 ?t : string?, ?replace : bool?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• x (of type string?, which defaults to null): set horizontal offset. (default: 0)
• y (of type string?, which defaults to null): set vertical offset. (default: 0)
• width (of type string?, which defaults to null): set width of grid cell. (default: 0)
• w (of type string?, which defaults to null): set width of grid cell. (default: 0)
• height (of type string?, which defaults to null): set height of grid cell. (default: 0)
• h (of type string?, which defaults to null): set height of grid cell. (default: 0)
• color (of type string?, which defaults to null): set color of the grid. (default: black)
• c (of type string?, which defaults to null): set color of the grid. (default: black)
• thickness (of type string?, which defaults to null): set grid line thickness. (default: 1)
• t (of type string?, which defaults to null): set grid line thickness. (default: 1)
• replace (of type bool?, which defaults to null): replace color & alpha. (default: false)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.drawtext

Ffmpeg filter: Draw text on top of video frames using libfreetype library.

Type:

(?fontfile : string?, ?text : string?,
 ?textfile : string?, ?fontcolor : string?,
 ?fontcolor_expr : string?, ?boxcolor : string?,
 ?bordercolor : string?, ?shadowcolor : string?,
 ?box : bool?, ?boxborderw : int?, ?line_spacing : int?,
 ?fontsize : string?, ?x : string?, ?y : string?,
 ?shadowx : int?, ?shadowy : int?, ?borderw : int?,
 ?tabsize : int?, ?basetime : int?, ?font : string?,
 ?expansion : int?, ?timecode : string?,
 ?tc24hmax : bool?, ?timecode_rate : string?,
 ?r : string?, ?rate : string?, ?reload : bool?,
 ?alpha : string?, ?fix_bounds : bool?,
 ?start_number : int?, ?text_shaping : bool?,
 ?ft_load_flags : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• fontfile (of type string?, which defaults to null): set font file
• text (of type string?, which defaults to null): set text
• textfile (of type string?, which defaults to null): set text file
• fontcolor (of type string?, which defaults to null): set foreground color. (default: black)
• fontcolor_expr (of type string?, which defaults to null): set foreground color expression. (default: )
• boxcolor (of type string?, which defaults to null): set box color. (default: white)
• bordercolor (of type string?, which defaults to null): set border color. (default: black)
• shadowcolor (of type string?, which defaults to null): set shadow color. (default: black)
• box (of type bool?, which defaults to null): set box. (default: false)
• boxborderw (of type int?, which defaults to null): set box border width. (default: 0)
• line_spacing (of type int?, which defaults to null): set line spacing in pixels. (default: 0)
• fontsize (of type string?, which defaults to null): set font size
• x (of type string?, which defaults to null): set x expression. (default: 0)
• y (of type string?, which defaults to null): set y expression. (default: 0)
• shadowx (of type int?, which defaults to null): set shadow x offset. (default: 0)
• shadowy (of type int?, which defaults to null): set shadow y offset. (default: 0)
• borderw (of type int?, which defaults to null): set border width. (default: 0)
• tabsize (of type int?, which defaults to null): set tab size. (default: 4)
• basetime (of type int?, which defaults to null): set base time. (default: -9223372036854775808)
• font (of type string?, which defaults to null): Font name. (default: Sans)
• expansion (of type int?, which defaults to null): set the expansion mode. (default: 1, possible values: 0 (none), 1 (normal), 2 (strftime))
• timecode (of type string?, which defaults to null): set initial timecode
• tc24hmax (of type bool?, which defaults to null): set 24 hours max (timecode only). (default: false)
• timecode_rate (of type string?, which defaults to null): set rate (timecode only). (default: 0/1)
• r (of type string?, which defaults to null): set rate (timecode only). (default: 0/1)
• rate (of type string?, which defaults to null): set rate (timecode only). (default: 0/1)
• reload (of type bool?, which defaults to null): reload text file for each frame. (default: false)
• alpha (of type string?, which defaults to null): apply alpha while rendering. (default: 1)
• fix_bounds (of type bool?, which defaults to null): check and fix text coords to avoid clipping. (default: false)
• start_number (of type int?, which defaults to null): start frame number for n/frame_num variable. (default: 0)
• text_shaping (of type bool?, which defaults to null): attempt to shape text before drawing. (default: true)
• ft_load_flags (of type int?, which defaults to null): set font loading flags for libfreetype. (default: 0, possible values: 0 (default), 1 (no_scale), 2 (no_hinting), 4 (render), 8 (no_bitmap), 16 (vertical_layout), 32 (force_autohint), 64 (crop_bitmap), 128 (pedantic), 512 (ignore_global_advance_width), 1024 (no_recurse), 2048 (ignore_transform), 4096 (monochrome), 8192 (linear_design), 32768 (no_autohint))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.drmeter

Ffmpeg filter: Measure audio dynamic range.

Type:

(?length : float?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• length (of type float?, which defaults to null): set the window length. (default: 3.)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.dynaudnorm

Ffmpeg filter: Dynamic Audio Normalizer.

Type:

(?f : int?, ?g : int?, ?p : float?, ?m : float?,
 ?r : float?, ?n : bool?, ?c : bool?, ?b : bool?,
 ?s : float?, ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• f (of type int?, which defaults to null): set the frame length in msec. (default: 500)
• g (of type int?, which defaults to null): set the filter size. (default: 31)
• p (of type float?, which defaults to null): set the peak value. (default: 0.95)
• m (of type float?, which defaults to null): set the max amplification. (default: 10.)
• r (of type float?, which defaults to null): set the target RMS. (default: 0.)
• n (of type bool?, which defaults to null): set channel coupling. (default: true)
• c (of type bool?, which defaults to null): set DC correction. (default: false)
• b (of type bool?, which defaults to null): set alternative boundary mode. (default: false)
• s (of type float?, which defaults to null): set the compress factor. (default: 0.)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.earwax

Ffmpeg filter: Widen the stereo image.

Type:

(ffmpeg.filter.graph, ffmpeg.filter.audio) ->
ffmpeg.filter.audio

Arguments:

• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.ebur128

Ffmpeg filter: EBU R128 scanner. This filter has dynamic outputs: returned value is a tuple of audio and video outputs. Total number of outputs is determined at runtime.

Type:

(?video : bool?, ?size : string?, ?meter : int?,
 ?framelog : int?, ?metadata : bool?, ?peak : int?,
 ?dualmono : bool?, ?panlaw : float?, ?target : int?,
 ?gauge : int?, ?scale : int?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) ->
[ffmpeg.filter.audio] * [ffmpeg.filter.video]

Arguments:

• video (of type bool?, which defaults to null): set video output. (default: false)
• size (of type string?, which defaults to null): set video size. (default: 640x480)
• meter (of type int?, which defaults to null): set scale meter (+9 to +18). (default: 9)
• framelog (of type int?, which defaults to null): force frame logging level. (default: -1, possible values: 32 (info), 40 (verbose))
• metadata (of type bool?, which defaults to null): inject metadata in the filtergraph. (default: false)
• peak (of type int?, which defaults to null): set peak mode. (default: 0, possible values: 0 (none), 2 (sample), 4 (true))
• dualmono (of type bool?, which defaults to null): treat mono input files as dual-mono. (default: false)
• panlaw (of type float?, which defaults to null): set a specific pan law for dual-mono files. (default: -3.01029995664)
• target (of type int?, which defaults to null): set a specific target level in LUFS (-23 to 0). (default: -23)
• gauge (of type int?, which defaults to null): set gauge display type. (default: 0, possible values: 0 (momentary), 0 (m), 1 (shortterm), 1 (s))
• scale (of type int?, which defaults to null): sets display method for the stats. (default: 0, possible values: 0 (absolute), 0 (LUFS), 1 (relative), 1 (LU))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.edgedetect

Ffmpeg filter: Detect and draw edge.

Type:

(?high : float?, ?low : float?, ?mode : int?,
 ?planes : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• high (of type float?, which defaults to null): set high threshold. (default: 0.196078431373)
• low (of type float?, which defaults to null): set low threshold. (default: 0.078431372549)
• mode (of type int?, which defaults to null): set mode. (default: 0, possible values: 0 (wires), 1 (colormix), 2 (canny))
• planes (of type int?, which defaults to null): set planes to filter. (default: 7, possible values: 1 (y), 2 (u), 4 (v), 4 (r), 1 (g), 2 (b))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.elbg

Ffmpeg filter: Apply posterize effect, using the ELBG algorithm.

Type:

(?codebook_length : int?, ?l : int?, ?nb_steps : int?,
 ?n : int?, ?seed : int?, ?s : int?, ?pal8 : bool?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• codebook_length (of type int?, which defaults to null): set codebook length. (default: 256)
• l (of type int?, which defaults to null): set codebook length. (default: 256)
• nb_steps (of type int?, which defaults to null): set max number of steps used to compute the mapping. (default: 1)
• n (of type int?, which defaults to null): set max number of steps used to compute the mapping. (default: 1)
• seed (of type int?, which defaults to null): set the random seed. (default: -1)
• s (of type int?, which defaults to null): set the random seed. (default: -1)
• pal8 (of type bool?, which defaults to null): set the pal8 output. (default: false)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.entropy

Ffmpeg filter: Measure video frames entropy.

Type:

(?mode : int?, ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• mode (of type int?, which defaults to null): set kind of histogram entropy measurement. (default: 0, possible values: 0 (normal), 1 (diff))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.eq

Ffmpeg filter: Adjust brightness, contrast, gamma, and saturation.

Type:

(?contrast : string?, ?brightness : string?,
 ?saturation : string?, ?gamma : string?,
 ?gamma_r : string?, ?gamma_g : string?,
 ?gamma_b : string?, ?gamma_weight : string?,
 ?eval : int?, ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• contrast (of type string?, which defaults to null): set the contrast adjustment, negative values give a negative image. (default: 1.0)
• brightness (of type string?, which defaults to null): set the brightness adjustment. (default: 0.0)
• saturation (of type string?, which defaults to null): set the saturation adjustment. (default: 1.0)
• gamma (of type string?, which defaults to null): set the initial gamma value. (default: 1.0)
• gamma_r (of type string?, which defaults to null): gamma value for red. (default: 1.0)
• gamma_g (of type string?, which defaults to null): gamma value for green. (default: 1.0)
• gamma_b (of type string?, which defaults to null): gamma value for blue. (default: 1.0)
• gamma_weight (of type string?, which defaults to null): set the gamma weight which reduces the effect of gamma on bright areas. (default: 1.0)
• eval (of type int?, which defaults to null): specify when to evaluate expressions. (default: 0, possible values: 0 (init), 1 (frame))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.equalizer

Ffmpeg filter: Apply two-pole peaking equalization (EQ) filter.

Type:

(?frequency : float?, ?f : float?, ?width_type : int?,
 ?t : int?, ?width : float?, ?w : float?, ?gain : float?,
 ?g : float?, ?mix : float?, ?m : float?,
 ?channels : string?, ?c : string?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• frequency (of type float?, which defaults to null): set central frequency. (default: 0.)
• f (of type float?, which defaults to null): set central frequency. (default: 0.)
• width_type (of type int?, which defaults to null): set filter-width type. (default: 3, possible values: 1 (h), 3 (q), 2 (o), 4 (s), 5 (k))
• t (of type int?, which defaults to null): set filter-width type. (default: 3, possible values: 1 (h), 3 (q), 2 (o), 4 (s), 5 (k))
• width (of type float?, which defaults to null): set band-width. (default: 1.)
• w (of type float?, which defaults to null): set band-width. (default: 1.)
• gain (of type float?, which defaults to null): set gain. (default: 0.)
• g (of type float?, which defaults to null): set gain. (default: 0.)
• mix (of type float?, which defaults to null): set mix. (default: 1.)
• m (of type float?, which defaults to null): set mix. (default: 1.)
• channels (of type string?, which defaults to null): set channels to filter
• c (of type string?, which defaults to null): set channels to filter
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.erosion

Ffmpeg filter: Apply erosion effect.

Type:

(?threshold0 : int?, ?threshold1 : int?,
 ?threshold2 : int?, ?threshold3 : int?,
 ?coordinates : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• threshold0 (of type int?, which defaults to null): set threshold for 1st plane. (default: 65535)
• threshold1 (of type int?, which defaults to null): set threshold for 2nd plane. (default: 65535)
• threshold2 (of type int?, which defaults to null): set threshold for 3rd plane. (default: 65535)
• threshold3 (of type int?, which defaults to null): set threshold for 4th plane. (default: 65535)
• coordinates (of type int?, which defaults to null): set coordinates. (default: 255)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.erosion_opencl

Ffmpeg filter: Apply erosion effect

Type:

(?threshold0 : float?, ?threshold1 : float?,
 ?threshold2 : float?, ?threshold3 : float?,
 ?coordinates : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• threshold0 (of type float?, which defaults to null): set threshold for 1st plane. (default: 65535.)
• threshold1 (of type float?, which defaults to null): set threshold for 2nd plane. (default: 65535.)
• threshold2 (of type float?, which defaults to null): set threshold for 3rd plane. (default: 65535.)
• threshold3 (of type float?, which defaults to null): set threshold for 4th plane. (default: 65535.)
• coordinates (of type int?, which defaults to null): set coordinates. (default: 255)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.extractplanes

Ffmpeg filter: Extract planes as grayscale frames. This filter has dynamic outputs: returned value is a tuple of audio and video outputs. Total number of outputs is determined at runtime.

Type:

(?planes : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) ->
[ffmpeg.filter.audio] * [ffmpeg.filter.video]

Arguments:

• planes (of type int?, which defaults to null): set planes. (default: 1, possible values: 16 (y), 32 (u), 64 (v), 1 (r), 2 (g), 4 (b), 8 (a))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.extrastereo

Ffmpeg filter: Increase difference between stereo audio channels.

Type:

(?m : float?, ?c : bool?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• m (of type float?, which defaults to null): set the difference coefficient. (default: 2.5)
• c (of type bool?, which defaults to null): enable clipping. (default: true)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.fade

Ffmpeg filter: Fade in/out input video.

Type:

(?type : int?, ?t : int?, ?start_frame : int?, ?s : int?,
 ?nb_frames : int?, ?n : int?, ?alpha : bool?,
 ?start_time : int?, ?st : int?, ?duration : int?,
 ?d : int?, ?color : string?, ?c : string?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• type (of type int?, which defaults to null): ‘in’ or ‘out’ for fade-in/fade-out. (default: 0, possible values: 0 (in), 1 (out))
• t (of type int?, which defaults to null): ‘in’ or ‘out’ for fade-in/fade-out. (default: 0, possible values: 0 (in), 1 (out))
• start_frame (of type int?, which defaults to null): Number of the first frame to which to apply the effect.. (default: 0)
• s (of type int?, which defaults to null): Number of the first frame to which to apply the effect.. (default: 0)
• nb_frames (of type int?, which defaults to null): Number of frames to which the effect should be applied.. (default: 25)
• n (of type int?, which defaults to null): Number of frames to which the effect should be applied.. (default: 25)
• alpha (of type bool?, which defaults to null): fade alpha if it is available on the input. (default: false)
• start_time (of type int?, which defaults to null): Number of seconds of the beginning of the effect.. (default: 0)
• st (of type int?, which defaults to null): Number of seconds of the beginning of the effect.. (default: 0)
• duration (of type int?, which defaults to null): Duration of the effect in seconds.. (default: 0)
• d (of type int?, which defaults to null): Duration of the effect in seconds.. (default: 0)
• color (of type string?, which defaults to null): set color. (default: black)
• c (of type string?, which defaults to null): set color. (default: black)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.fftdnoiz

Ffmpeg filter: Denoise frames using 3D FFT.

Type:

(?sigma : float?, ?amount : float?, ?block : int?,
 ?overlap : float?, ?prev : int?, ?next : int?,
 ?planes : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• sigma (of type float?, which defaults to null): set denoise strength. (default: 1.)
• amount (of type float?, which defaults to null): set amount of denoising. (default: 1.)
• block (of type int?, which defaults to null): set block log2(size). (default: 4)
• overlap (of type float?, which defaults to null): set block overlap. (default: 0.5)
• prev (of type int?, which defaults to null): set number of previous frames for temporal denoising. (default: 0)
• next (of type int?, which defaults to null): set number of next frames for temporal denoising. (default: 0)
• planes (of type int?, which defaults to null): set planes to filter. (default: 7)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.fftfilt

Ffmpeg filter: Apply arbitrary expressions to pixels in frequency domain.

Type:

(?dc_Y : int?, ?dc_U : int?, ?dc_V : int?,
 ?weight_Y : string?, ?weight_U : string?,
 ?weight_V : string?, ?eval : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• dc_Y (of type int?, which defaults to null): adjust gain in Y plane. (default: 0)
• dc_U (of type int?, which defaults to null): adjust gain in U plane. (default: 0)
• dc_V (of type int?, which defaults to null): adjust gain in V plane. (default: 0)
• weight_Y (of type string?, which defaults to null): set luminance expression in Y plane. (default: 1)
• weight_U (of type string?, which defaults to null): set chrominance expression in U plane
• weight_V (of type string?, which defaults to null): set chrominance expression in V plane
• eval (of type int?, which defaults to null): specify when to evaluate expressions. (default: 0, possible values: 0 (init), 1 (frame))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.field

Ffmpeg filter: Extract a field from the input video.

Type:

(?type : int?, ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• type (of type int?, which defaults to null): set field type (top or bottom). (default: 0, possible values: 0 (top), 1 (bottom))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.fieldhint

Ffmpeg filter: Field matching using hints.

Type:

(?hint : string?, ?mode : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• hint (of type string?, which defaults to null): set hint file
• mode (of type int?, which defaults to null): set hint mode. (default: 0, possible values: 0 (absolute), 1 (relative))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.fieldmatch

Ffmpeg filter: Field matching for inverse telecine. This filter has dynamic inputs: last two arguments are lists of audio and video inputs. Total number of inputs is determined at runtime.

Type:

(?order : int?, ?mode : int?, ?ppsrc : bool?,
 ?field : int?, ?mchroma : bool?, ?y0 : int?, ?y1 : int?,
 ?scthresh : float?, ?combmatch : int?, ?combdbg : int?,
 ?cthresh : int?, ?chroma : bool?, ?blockx : int?,
 ?blocky : int?, ?combpel : int?, ffmpeg.filter.graph,
 [ffmpeg.filter.audio], [ffmpeg.filter.video]) ->
ffmpeg.filter.video

Arguments:

• order (of type int?, which defaults to null): specify the assumed field order. (default: -1, possible values: -1 (auto), 0 (bff), 1 (tff))
• mode (of type int?, which defaults to null): set the matching mode or strategy to use. (default: 1, possible values: 0 (pc), 1 (pc_n), 2 (pc_u), 3 (pc_n_ub), 4 (pcn), 5 (pcn_ub))
• ppsrc (of type bool?, which defaults to null): mark main input as a pre-processed input and activate clean source input stream. (default: false)
• field (of type int?, which defaults to null): set the field to match from. (default: -1, possible values: -1 (auto), 0 (bottom), 1 (top))
• mchroma (of type bool?, which defaults to null): set whether or not chroma is included during the match comparisons. (default: true)
• y0 (of type int?, which defaults to null): define an exclusion band which excludes the lines between y0 and y1 from the field matching decision. (default: 0)
• y1 (of type int?, which defaults to null): define an exclusion band which excludes the lines between y0 and y1 from the field matching decision. (default: 0)
• scthresh (of type float?, which defaults to null): set scene change detection threshold. (default: 12.)
• combmatch (of type int?, which defaults to null): set combmatching mode. (default: 1, possible values: 0 (none), 1 (sc), 2 (full))
• combdbg (of type int?, which defaults to null): enable comb debug. (default: 0, possible values: 0 (none), 1 (pcn), 2 (pcnub))
• cthresh (of type int?, which defaults to null): set the area combing threshold used for combed frame detection. (default: 9)
• chroma (of type bool?, which defaults to null): set whether or not chroma is considered in the combed frame decision. (default: false)
• blockx (of type int?, which defaults to null): set the x-axis size of the window used during combed frame detection. (default: 16)
• blocky (of type int?, which defaults to null): set the y-axis size of the window used during combed frame detection. (default: 16)
• combpel (of type int?, which defaults to null): set the number of combed pixels inside any of the blocky by blockx size blocks on the frame for the frame to be detected as combed. (default: 80)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type [ffmpeg.filter.audio])
• (unlabeled) (of type [ffmpeg.filter.video])

ffmpeg.filter.fieldorder

Ffmpeg filter: Set the field order.

Type:

(?order : int?, ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• order (of type int?, which defaults to null): output field order. (default: 1, possible values: 0 (bff), 1 (tff))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.fifo

Ffmpeg filter: Buffer input images and send them when they are requested.

Type:

(ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.fillborders

Ffmpeg filter: Fill borders of the input video.

Type:

(?left : int?, ?right : int?, ?top : int?,
 ?bottom : int?, ?mode : int?, ?color : string?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• left (of type int?, which defaults to null): set the left fill border. (default: 0)
• right (of type int?, which defaults to null): set the right fill border. (default: 0)
• top (of type int?, which defaults to null): set the top fill border. (default: 0)
• bottom (of type int?, which defaults to null): set the bottom fill border. (default: 0)
• mode (of type int?, which defaults to null): set the fill borders mode. (default: 0, possible values: 0 (smear), 1 (mirror), 2 (fixed))
• color (of type string?, which defaults to null): set the color for the fixed mode. (default: black)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.find_rect

Ffmpeg filter: Find a user specified object.

Type:

(?object : string?, ?threshold : float?, ?mipmaps : int?,
 ?xmin : int?, ?ymin : int?, ?xmax : int?, ?ymax : int?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• object (of type string?, which defaults to null): object bitmap filename
• threshold (of type float?, which defaults to null): set threshold. (default: 0.5)
• mipmaps (of type int?, which defaults to null): set mipmaps. (default: 3)
• xmin (of type int?, which defaults to null): Default: 0
• ymin (of type int?, which defaults to null): Default: 0
• xmax (of type int?, which defaults to null): Default: 0
• ymax (of type int?, which defaults to null): Default: 0
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.firequalizer

Ffmpeg filter: Finite Impulse Response Equalizer.

Type:

(?gain : string?, ?gain_entry : string?, ?delay : float?,
 ?accuracy : float?, ?wfunc : int?, ?fixed : bool?,
 ?multi : bool?, ?zero_phase : bool?, ?scale : int?,
 ?dumpfile : string?, ?dumpscale : int?, ?fft2 : bool?,
 ?min_phase : bool?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• gain (of type string?, which defaults to null): set gain curve. (default: gain_interpolate(f))
• gain_entry (of type string?, which defaults to null): set gain entry
• delay (of type float?, which defaults to null): set delay. (default: 0.01)
• accuracy (of type float?, which defaults to null): set accuracy. (default: 5.)
• wfunc (of type int?, which defaults to null): set window function. (default: 1, possible values: 0 (rectangular), 1 (hann), 2 (hamming), 3 (blackman), 4 (nuttall3), 5 (mnuttall3), 6 (nuttall), 7 (bnuttall), 8 (bharris), 9 (tukey))
• fixed (of type bool?, which defaults to null): set fixed frame samples. (default: false)
• multi (of type bool?, which defaults to null): set multi channels mode. (default: false)
• zero_phase (of type bool?, which defaults to null): set zero phase mode. (default: false)
• scale (of type int?, which defaults to null): set gain scale. (default: 1, possible values: 0 (linlin), 1 (linlog), 2 (loglin), 3 (loglog))
• dumpfile (of type string?, which defaults to null): set dump file
• dumpscale (of type int?, which defaults to null): set dump scale. (default: 1, possible values: 0 (linlin), 1 (linlog), 2 (loglin), 3 (loglog))
• fft2 (of type bool?, which defaults to null): set 2-channels fft. (default: false)
• min_phase (of type bool?, which defaults to null): set minimum phase mode. (default: false)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.flanger

Ffmpeg filter: Apply a flanging effect to the audio.

Type:

(?delay : float?, ?depth : float?, ?regen : float?,
 ?width : float?, ?speed : float?, ?shape : int?,
 ?phase : float?, ?interp : int?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• delay (of type float?, which defaults to null): base delay in milliseconds. (default: 0.)
• depth (of type float?, which defaults to null): added swept delay in milliseconds. (default: 2.)
• regen (of type float?, which defaults to null): percentage regeneration (delayed signal feedback). (default: 0.)
• width (of type float?, which defaults to null): percentage of delayed signal mixed with original. (default: 71.)
• speed (of type float?, which defaults to null): sweeps per second (Hz). (default: 0.5)
• shape (of type int?, which defaults to null): swept wave shape. (default: 0, possible values: 1 (triangular), 1 (t), 0 (sinusoidal), 0 (s))
• phase (of type float?, which defaults to null): swept wave percentage phase-shift for multi-channel. (default: 25.)
• interp (of type int?, which defaults to null): delay-line interpolation. (default: 0, possible values: 0 (linear), 1 (quadratic))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.flite

Ffmpeg filter: Synthesize voice from text using libflite.

Type:

(?list_voices : bool?, ?nb_samples : int?, ?n : int?,
 ?text : string?, ?textfile : string?, ?v : string?,
 ?voice : string?, ffmpeg.filter.graph) ->
ffmpeg.filter.audio

Arguments:

• list_voices (of type bool?, which defaults to null): list voices and exit. (default: false)
• nb_samples (of type int?, which defaults to null): set number of samples per frame. (default: 512)
• n (of type int?, which defaults to null): set number of samples per frame. (default: 512)
• text (of type string?, which defaults to null): set text to speak
• textfile (of type string?, which defaults to null): set filename of the text to speak
• v (of type string?, which defaults to null): set voice. (default: kal)
• voice (of type string?, which defaults to null): set voice. (default: kal)
• (unlabeled) (of type ffmpeg.filter.graph)

ffmpeg.filter.floodfill

Ffmpeg filter: Fill area with same color with another color.

Type:

(?x : int?, ?y : int?, ?s0 : int?, ?s1 : int?,
 ?s2 : int?, ?s3 : int?, ?d0 : int?, ?d1 : int?,
 ?d2 : int?, ?d3 : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• x (of type int?, which defaults to null): set pixel x coordinate. (default: 0)
• y (of type int?, which defaults to null): set pixel y coordinate. (default: 0)
• s0 (of type int?, which defaults to null): set source #0 component value. (default: 0)
• s1 (of type int?, which defaults to null): set source #1 component value. (default: 0)
• s2 (of type int?, which defaults to null): set source #2 component value. (default: 0)
• s3 (of type int?, which defaults to null): set source #3 component value. (default: 0)
• d0 (of type int?, which defaults to null): set destination #0 component value. (default: 0)
• d1 (of type int?, which defaults to null): set destination #1 component value. (default: 0)
• d2 (of type int?, which defaults to null): set destination #2 component value. (default: 0)
• d3 (of type int?, which defaults to null): set destination #3 component value. (default: 0)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.format

Ffmpeg filter: Convert the input video to one of the specified pixel formats.

Type:

(?pix_fmts : string?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• pix_fmts (of type string?, which defaults to null): A ‘|’-separated list of pixel formats
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.fps

Ffmpeg filter: Force constant framerate.

Type:

(?fps : string?, ?start_time : float?, ?round : int?,
 ?eof_action : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• fps (of type string?, which defaults to null): A string describing desired output framerate. (default: 25)
• start_time (of type float?, which defaults to null): Assume the first PTS should be this value.. (default: 1.79769313486e+308)
• round (of type int?, which defaults to null): set rounding method for timestamps. (default: 5, possible values: 0 (zero), 1 (inf), 2 (down), 3 (up), 5 (near))
• eof_action (of type int?, which defaults to null): action performed for last frame. (default: 0, possible values: 0 (round), 1 (pass))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.framepack

Ffmpeg filter: Generate a frame packed stereoscopic video.

Type:

(?format : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• format (of type int?, which defaults to null): Frame pack output format. (default: 1, possible values: 1 (sbs), 2 (tab), 3 (frameseq), 6 (lines), 7 (columns))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.framerate

Ffmpeg filter: Upsamples or downsamples progressive source between specified frame rates.

Type:

(?fps : string?, ?interp_start : int?,
 ?interp_end : int?, ?scene : float?, ?flags : int?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• fps (of type string?, which defaults to null): required output frames per second rate. (default: 50)
• interp_start (of type int?, which defaults to null): point to start linear interpolation. (default: 15)
• interp_end (of type int?, which defaults to null): point to end linear interpolation. (default: 240)
• scene (of type float?, which defaults to null): scene change level. (default: 8.2)
• flags (of type int?, which defaults to null): set flags. (default: 1, possible values: 1 (scene_change_detect), 1 (scd))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.framestep

Ffmpeg filter: Select one frame every N frames.

Type:

(?step : int?, ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• step (of type int?, which defaults to null): set frame step. (default: 1)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.freezedetect

Ffmpeg filter: Detects frozen video input.

Type:

(?n : float?, ?noise : float?, ?d : int?,
 ?duration : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• n (of type float?, which defaults to null): set noise tolerance. (default: 0.001)
• noise (of type float?, which defaults to null): set noise tolerance. (default: 0.001)
• d (of type int?, which defaults to null): set minimum duration in seconds. (default: 2000000)
• duration (of type int?, which defaults to null): set minimum duration in seconds. (default: 2000000)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.frei0r

Ffmpeg filter: Apply a frei0r effect.

Type:

(?filter_name : string?, ?filter_params : string?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• filter_name (of type string?, which defaults to null)
• filter_params (of type string?, which defaults to null)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.frei0r_src

Ffmpeg filter: Generate a frei0r source.

Type:

(?size : string?, ?framerate : string?,
 ?filter_name : string?, ?filter_params : string?,
 ffmpeg.filter.graph) -> ffmpeg.filter.video

Arguments:

• size (of type string?, which defaults to null): Dimensions of the generated video.. (default: 320x240)
• framerate (of type string?, which defaults to null): Default: 25
• filter_name (of type string?, which defaults to null)
• filter_params (of type string?, which defaults to null)
• (unlabeled) (of type ffmpeg.filter.graph)

ffmpeg.filter.fspp

Ffmpeg filter: Apply Fast Simple Post-processing filter.

Type:

(?quality : int?, ?qp : int?, ?strength : int?,
 ?use_bframe_qp : bool?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• quality (of type int?, which defaults to null): set quality. (default: 4)
• qp (of type int?, which defaults to null): force a constant quantizer parameter. (default: 0)
• strength (of type int?, which defaults to null): set filter strength. (default: 0)
• use_bframe_qp (of type bool?, which defaults to null): use B-frames’ QP. (default: false)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.gblur

Ffmpeg filter: Apply Gaussian Blur filter.

Type:

(?sigma : float?, ?steps : int?, ?planes : int?,
 ?sigmaV : float?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• sigma (of type float?, which defaults to null): set sigma. (default: 0.5)
• steps (of type int?, which defaults to null): set number of steps. (default: 1)
• planes (of type int?, which defaults to null): set planes to filter. (default: 15)
• sigmaV (of type float?, which defaults to null): set vertical sigma. (default: -1.)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.geq

Ffmpeg filter: Apply generic equation to each pixel.

Type:

(?lum_expr : string?, ?lum : string?, ?cb_expr : string?,
 ?cb : string?, ?cr_expr : string?, ?cr : string?,
 ?alpha_expr : string?, ?a : string?,
 ?red_expr : string?, ?r : string?,
 ?green_expr : string?, ?g : string?,
 ?blue_expr : string?, ?b : string?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• lum_expr (of type string?, which defaults to null): set luminance expression
• lum (of type string?, which defaults to null): set luminance expression
• cb_expr (of type string?, which defaults to null): set chroma blue expression
• cb (of type string?, which defaults to null): set chroma blue expression
• cr_expr (of type string?, which defaults to null): set chroma red expression
• cr (of type string?, which defaults to null): set chroma red expression
• alpha_expr (of type string?, which defaults to null): set alpha expression
• a (of type string?, which defaults to null): set alpha expression
• red_expr (of type string?, which defaults to null): set red expression
• r (of type string?, which defaults to null): set red expression
• green_expr (of type string?, which defaults to null): set green expression
• g (of type string?, which defaults to null): set green expression
• blue_expr (of type string?, which defaults to null): set blue expression
• b (of type string?, which defaults to null): set blue expression
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.gradfun

Ffmpeg filter: Debands video quickly using gradients.

Type:

(?strength : float?, ?radius : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• strength (of type float?, which defaults to null): The maximum amount by which the filter will change any one pixel.. (default: 1.2)
• radius (of type int?, which defaults to null): The neighborhood to fit the gradient to.. (default: 16)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.graphmonitor

Ffmpeg filter: Show various filtergraph stats.

Type:

(?size : string?, ?s : string?, ?opacity : float?,
 ?o : float?, ?mode : int?, ?m : int?, ?flags : int?,
 ?f : int?, ?rate : string?, ?r : string?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• size (of type string?, which defaults to null): set monitor size. (default: hd720)
• s (of type string?, which defaults to null): set monitor size. (default: hd720)
• opacity (of type float?, which defaults to null): set video opacity. (default: 0.9)
• o (of type float?, which defaults to null): set video opacity. (default: 0.9)
• mode (of type int?, which defaults to null): set mode. (default: 0, possible values: 0 (full), 1 (compact))
• m (of type int?, which defaults to null): set mode. (default: 0, possible values: 0 (full), 1 (compact))
• flags (of type int?, which defaults to null): set flags. (default: 1, possible values: 1 (queue), 4 (frame_count_in), 2 (frame_count_out), 8 (pts), 16 (time), 32 (timebase), 64 (format), 128 (size), 256 (rate))
• f (of type int?, which defaults to null): set flags. (default: 1, possible values: 1 (queue), 4 (frame_count_in), 2 (frame_count_out), 8 (pts), 16 (time), 32 (timebase), 64 (format), 128 (size), 256 (rate))
• rate (of type string?, which defaults to null): set video rate. (default: 25)
• r (of type string?, which defaults to null): set video rate. (default: 25)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.greyedge

Ffmpeg filter: Estimates scene illumination by grey edge assumption.

Type:

(?difford : int?, ?minknorm : int?, ?sigma : float?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• difford (of type int?, which defaults to null): set differentiation order. (default: 1)
• minknorm (of type int?, which defaults to null): set Minkowski norm. (default: 1)
• sigma (of type float?, which defaults to null): set sigma. (default: 1.)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.haas

Ffmpeg filter: Apply Haas Stereo Enhancer.

Type:

(?level_in : float?, ?level_out : float?,
 ?side_gain : float?, ?middle_source : int?,
 ?middle_phase : bool?, ?left_delay : float?,
 ?left_balance : float?, ?left_gain : float?,
 ?left_phase : bool?, ?right_delay : float?,
 ?right_balance : float?, ?right_gain : float?,
 ?right_phase : bool?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• level_in (of type float?, which defaults to null): set level in. (default: 1.)
• level_out (of type float?, which defaults to null): set level out. (default: 1.)
• side_gain (of type float?, which defaults to null): set side gain. (default: 1.)
• middle_source (of type int?, which defaults to null): set middle source. (default: 2, possible values: 0 (left), 1 (right), 2 (mid), 3 (side))
• middle_phase (of type bool?, which defaults to null): set middle phase. (default: false)
• left_delay (of type float?, which defaults to null): set left delay. (default: 2.05)
• left_balance (of type float?, which defaults to null): set left balance. (default: -1.)
• left_gain (of type float?, which defaults to null): set left gain. (default: 1.)
• left_phase (of type bool?, which defaults to null): set left phase. (default: false)
• right_delay (of type float?, which defaults to null): set right delay. (default: 2.12)
• right_balance (of type float?, which defaults to null): set right balance. (default: 1.)
• right_gain (of type float?, which defaults to null): set right gain. (default: 1.)
• right_phase (of type bool?, which defaults to null): set right phase. (default: true)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.haldclut

Ffmpeg filter: Adjust colors using a Hald CLUT.

Type:

(?interp : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• interp (of type int?, which defaults to null): select interpolation mode. (default: 2, possible values: 0 (nearest), 1 (trilinear), 2 (tetrahedral))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.haldclutsrc

Ffmpeg filter: Provide an identity Hald CLUT.

Type:

(?level : int?, ?rate : string?, ?r : string?,
 ?duration : int?, ?d : int?, ?sar : string?,
 ffmpeg.filter.graph) -> ffmpeg.filter.video

Arguments:

• level (of type int?, which defaults to null): set level. (default: 6)
• rate (of type string?, which defaults to null): set video rate. (default: 25)
• r (of type string?, which defaults to null): set video rate. (default: 25)
• duration (of type int?, which defaults to null): set video duration. (default: -1)
• d (of type int?, which defaults to null): set video duration. (default: -1)
• sar (of type string?, which defaults to null): set video sample aspect ratio. (default: 1/1)
• (unlabeled) (of type ffmpeg.filter.graph)

ffmpeg.filter.hdcd

Ffmpeg filter: Apply High Definition Compatible Digital (HDCD) decoding.

Type:

(?disable_autoconvert : bool?, ?process_stereo : bool?,
 ?cdt_ms : int?, ?force_pe : bool?, ?analyze_mode : int?,
 ?bits_per_sample : int?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• disable_autoconvert (of type bool?, which defaults to null): Disable any format conversion or resampling in the filter graph.. (default: true)
• process_stereo (of type bool?, which defaults to null): Process stereo channels together. Only apply target_gain when both channels match.. (default: true)
• cdt_ms (of type int?, which defaults to null): Code detect timer period in ms.. (default: 2000)
• force_pe (of type bool?, which defaults to null): Always extend peaks above -3dBFS even when PE is not signaled.. (default: false)
• analyze_mode (of type int?, which defaults to null): Replace audio with solid tone and signal some processing aspect in the amplitude.. (default: 0, possible values: 0 (off), 1 (lle), 2 (pe), 3 (cdt), 4 (tgm))
• bits_per_sample (of type int?, which defaults to null): Valid bits per sample (location of the true LSB).. (default: 16, possible values: 16 (16), 20 (20), 24 (24))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.headphone

Ffmpeg filter: Apply headphone binaural spatialization with HRTFs in additional streams. This filter has dynamic inputs: last two arguments are lists of audio and video inputs. Total number of inputs is determined at runtime.

Type:

(?map : string?, ?gain : float?, ?lfe : float?,
 ?type : int?, ?size : int?, ?hrir : int?,
 ffmpeg.filter.graph, [ffmpeg.filter.audio],
 [ffmpeg.filter.video]) -> ffmpeg.filter.audio

Arguments:

• map (of type string?, which defaults to null): set channels convolution mappings
• gain (of type float?, which defaults to null): set gain in dB. (default: 0.)
• lfe (of type float?, which defaults to null): set lfe gain in dB. (default: 0.)
• type (of type int?, which defaults to null): set processing. (default: 1, possible values: 0 (time), 1 (freq))
• size (of type int?, which defaults to null): set frame size. (default: 1024)
• hrir (of type int?, which defaults to null): set hrir format. (default: 0, possible values: 0 (stereo), 1 (multich))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type [ffmpeg.filter.audio])
• (unlabeled) (of type [ffmpeg.filter.video])

ffmpeg.filter.hflip

Ffmpeg filter: Horizontally flip the input video.

Type:

(ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.highpass

Ffmpeg filter: Apply a high-pass filter with 3dB point frequency.

Type:

(?frequency : float?, ?f : float?, ?width_type : int?,
 ?t : int?, ?width : float?, ?w : float?, ?poles : int?,
 ?p : int?, ?mix : float?, ?m : float?,
 ?channels : string?, ?c : string?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• frequency (of type float?, which defaults to null): set frequency. (default: 3000.)
• f (of type float?, which defaults to null): set frequency. (default: 3000.)
• width_type (of type int?, which defaults to null): set filter-width type. (default: 3, possible values: 1 (h), 3 (q), 2 (o), 4 (s), 5 (k))
• t (of type int?, which defaults to null): set filter-width type. (default: 3, possible values: 1 (h), 3 (q), 2 (o), 4 (s), 5 (k))
• width (of type float?, which defaults to null): set width. (default: 0.707)
• w (of type float?, which defaults to null): set width. (default: 0.707)
• poles (of type int?, which defaults to null): set number of poles. (default: 2)
• p (of type int?, which defaults to null): set number of poles. (default: 2)
• mix (of type float?, which defaults to null): set mix. (default: 1.)
• m (of type float?, which defaults to null): set mix. (default: 1.)
• channels (of type string?, which defaults to null): set channels to filter
• c (of type string?, which defaults to null): set channels to filter
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.highshelf

Ffmpeg filter: Apply a high shelf filter.

Type:

(?frequency : float?, ?f : float?, ?width_type : int?,
 ?t : int?, ?width : float?, ?w : float?, ?gain : float?,
 ?g : float?, ?mix : float?, ?m : float?,
 ?channels : string?, ?c : string?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• frequency (of type float?, which defaults to null): set central frequency. (default: 3000.)
• f (of type float?, which defaults to null): set central frequency. (default: 3000.)
• width_type (of type int?, which defaults to null): set filter-width type. (default: 3, possible values: 1 (h), 3 (q), 2 (o), 4 (s), 5 (k))
• t (of type int?, which defaults to null): set filter-width type. (default: 3, possible values: 1 (h), 3 (q), 2 (o), 4 (s), 5 (k))
• width (of type float?, which defaults to null): set shelf transition steep. (default: 0.5)
• w (of type float?, which defaults to null): set shelf transition steep. (default: 0.5)
• gain (of type float?, which defaults to null): set gain. (default: 0.)
• g (of type float?, which defaults to null): set gain. (default: 0.)
• mix (of type float?, which defaults to null): set mix. (default: 1.)
• m (of type float?, which defaults to null): set mix. (default: 1.)
• channels (of type string?, which defaults to null): set channels to filter
• c (of type string?, which defaults to null): set channels to filter
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

ffmpeg.filter.hilbert

Ffmpeg filter: Generate a Hilbert transform FIR coefficients.

Type:

(?sample_rate : int?, ?r : int?, ?taps : int?, ?t : int?,
 ?nb_samples : int?, ?n : int?, ?win_func : int?,
 ?w : int?, ffmpeg.filter.graph) -> ffmpeg.filter.audio

Arguments:

• sample_rate (of type int?, which defaults to null): set sample rate. (default: 44100)
• r (of type int?, which defaults to null): set sample rate. (default: 44100)
• taps (of type int?, which defaults to null): set number of taps. (default: 22051)
• t (of type int?, which defaults to null): set number of taps. (default: 22051)
• nb_samples (of type int?, which defaults to null): set the number of samples per requested frame. (default: 1024)
• n (of type int?, which defaults to null): set the number of samples per requested frame. (default: 1024)
• win_func (of type int?, which defaults to null): set window function. (default: 3, possible values: 0 (rect), 4 (bartlett), 1 (hanning), 2 (hamming), 3 (blackman), 5 (welch), 6 (flattop), 7 (bharris), 8 (bnuttall), 11 (bhann), 9 (sine), 10 (nuttall), 12 (lanczos), 13 (gauss), 14 (tukey), 15 (dolph), 16 (cauchy), 17 (parzen), 18 (poisson), 19 (bohman))
• w (of type int?, which defaults to null): set window function. (default: 3, possible values: 0 (rect), 4 (bartlett), 1 (hanning), 2 (hamming), 3 (blackman), 5 (welch), 6 (flattop), 7 (bharris), 8 (bnuttall), 11 (bhann), 9 (sine), 10 (nuttall), 12 (lanczos), 13 (gauss), 14 (tukey), 15 (dolph), 16 (cauchy), 17 (parzen), 18 (poisson), 19 (bohman))
• (unlabeled) (of type ffmpeg.filter.graph)

ffmpeg.filter.histeq

Ffmpeg filter: Apply global color histogram equalization.

Type:

(?strength : float?, ?intensity : float?,
 ?antibanding : int?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• strength (of type float?, which defaults to null): set the strength. (default: 0.2)
• intensity (of type float?, which defaults to null): set the intensity. (default: 0.21)
• antibanding (of type int?, which defaults to null): set the antibanding level. (default: 0, possible values: 0 (none), 1 (weak), 2 (strong))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.histogram

Ffmpeg filter: Compute and draw a histogram.

Type:

(?level_height : int?, ?scale_height : int?,
 ?display_mode : int?, ?d : int?, ?levels_mode : int?,
 ?m : int?, ?components : int?, ?c : int?,
 ?fgopacity : float?, ?f : float?, ?bgopacity : float?,
 ?b : float?, ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• level_height (of type int?, which defaults to null): set level height. (default: 200)
• scale_height (of type int?, which defaults to null): set scale height. (default: 12)
• display_mode (of type int?, which defaults to null): set display mode. (default: 2, possible values: 0 (overlay), 1 (parade), 2 (stack))
• d (of type int?, which defaults to null): set display mode. (default: 2, possible values: 0 (overlay), 1 (parade), 2 (stack))
• levels_mode (of type int?, which defaults to null): set levels mode. (default: 0, possible values: 0 (linear), 1 (logarithmic))
• m (of type int?, which defaults to null): set levels mode. (default: 0, possible values: 0 (linear), 1 (logarithmic))
• components (of type int?, which defaults to null): set color components to display. (default: 7)
• c (of type int?, which defaults to null): set color components to display. (default: 7)
• fgopacity (of type float?, which defaults to null): set foreground opacity. (default: 0.7)
• f (of type float?, which defaults to null): set foreground opacity. (default: 0.7)
• bgopacity (of type float?, which defaults to null): set background opacity. (default: 0.5)
• b (of type float?, which defaults to null): set background opacity. (default: 0.5)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.hqdn3d

Ffmpeg filter: Apply a High Quality 3D Denoiser.

Type:

(?luma_spatial : float?, ?chroma_spatial : float?,
 ?luma_tmp : float?, ?chroma_tmp : float?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• luma_spatial (of type float?, which defaults to null): spatial luma strength. (default: 0.)
• chroma_spatial (of type float?, which defaults to null): spatial chroma strength. (default: 0.)
• luma_tmp (of type float?, which defaults to null): temporal luma strength. (default: 0.)
• chroma_tmp (of type float?, which defaults to null): temporal chroma strength. (default: 0.)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.hqx

Ffmpeg filter: Scale the input by 2, 3 or 4 using the hq*x magnification algorithm.

Type:

(?n : int?, ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• n (of type int?, which defaults to null): set scale factor. (default: 3)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.hstack

Ffmpeg filter: Stack video inputs horizontally. This filter has dynamic inputs: last two arguments are lists of audio and video inputs. Total number of inputs is determined at runtime.

Type:

(?inputs : int?, ?shortest : bool?, ffmpeg.filter.graph,
 [ffmpeg.filter.audio], [ffmpeg.filter.video]) ->
ffmpeg.filter.video