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
• FFmpeg Filter
• Bool
• Control
• Interaction
• Liquidsoap
• List
• Math
• Pair
• String
• System

Bool

Control

File

Filter

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.addroi

Ffmpeg filter: Add region of interest to frame.

Type:

(?x : string?, ?y : string?, ?w : string?, ?h : string?,
 ?qoffset : string?, ?clear : bool?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• x (of type string?, which defaults to null): Region distance from left edge of frame.. (default: 0)
• y (of type string?, which defaults to null): Region distance from top edge of frame.. (default: 0)
• w (of type string?, which defaults to null): Region width.. (default: 0)
• h (of type string?, which defaults to null): Region height.. (default: 0)
• qoffset (of type string?, which defaults to null): Quantisation offset to apply in the region.. (default: -1/10)
• clear (of type bool?, which defaults to null): Remove any existing regions of interest before adding the new one.. (default: false)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

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?, ?all : bool?, 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
• all (of type bool?, which defaults to null): use last available delay for remained channels. (default: false)
• (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?,
 ?rate : string?, ?r : 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)
• 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.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 additional stream(s). 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:

(?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?, ?nbirs : int?, ?ir : int?,
 ffmpeg.filter.graph, [ffmpeg.filter.audio],
 [ffmpeg.filter.video]) ->
[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)
• nbirs (of type int?, which defaults to null): set number of input IRs. (default: 1)
• ir (of type int?, which defaults to null): select IR. (default: 0)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type [ffmpeg.filter.audio])
• (unlabeled) (of type [ffmpeg.filter.video])

ffmpeg.filter.afirsrc

Ffmpeg filter: Generate a FIR coefficients audio stream.

Type:

(?taps : int?, ?t : int?, ?frequency : string?,
 ?f : string?, ?magnitude : string?, ?m : string?,
 ?phase : string?, ?p : string?, ?sample_rate : int?,
 ?r : int?, ?nb_samples : int?, ?n : int?,
 ?win_func : int?, ?w : int?, ffmpeg.filter.graph) ->
ffmpeg.filter.audio

Arguments:

• taps (of type int?, which defaults to null): set number of taps. (default: 1025)
• t (of type int?, which defaults to null): set number of taps. (default: 1025)
• frequency (of type string?, which defaults to null): set frequency points. (default: 0 1)
• f (of type string?, which defaults to null): set frequency points. (default: 0 1)
• magnitude (of type string?, which defaults to null): set magnitude values. (default: 1 1)
• m (of type string?, which defaults to null): set magnitude values. (default: 1 1)
• phase (of type string?, which defaults to null): set phase values. (default: 0 0)
• p (of type string?, which defaults to null): set phase values. (default: 0 0)
• 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)
• 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.aformat

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

Type:

(?sample_fmts : string?, ?f : string?,
 ?sample_rates : string?, ?r : string?,
 ?channel_layouts : string?, ?cl : 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.
• f (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.
• r (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.
• cl (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:

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

Arguments:

• zeros (of type string?, which defaults to null): set B/numerator/zeros coefficients. (default: 1+0i 1-0i)
• z (of type string?, which defaults to null): set B/numerator/zeros coefficients. (default: 1+0i 1-0i)
• poles (of type string?, which defaults to null): set A/denominator/poles coefficients. (default: 1+0i 1-0i)
• p (of type string?, which defaults to null): set A/denominator/poles coefficients. (default: 1+0i 1-0i)
• gains (of type string?, which defaults to null): set channels gains. (default: 1|1)
• 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.)
• format (of type int?, which defaults to null): set coefficients format. (default: 1, possible values: 0 (tf), 1 (zp), 2 (pr), 3 (pd), 4 (sp))
• f (of type int?, which defaults to null): set coefficients format. (default: 1, possible values: 0 (tf), 1 (zp), 2 (pr), 3 (pd), 4 (sp))
• process (of type int?, which defaults to null): set kind of processing. (default: 1, possible values: 0 (d), 1 (s))
• r (of type int?, which defaults to null): set kind of processing. (default: 1, possible values: 0 (d), 1 (s))
• precision (of type int?, which defaults to null): set filtering precision. (default: 0, possible values: 0 (dbl), 1 (flt), 2 (i32), 3 (i16))
• e (of type int?, which defaults to null): set precision. (default: 0, possible values: 0 (dbl), 1 (flt), 2 (i32), 3 (i16))
• normalize (of type bool?, which defaults to null): normalize coefficients. (default: true)
• n (of type bool?, which defaults to null): normalize coefficients. (default: true)
• 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?, ?duration : 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)
• 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))
• (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?,
 ?normalize : bool?, ?n : bool?, ?order : int?,
 ?o : int?, 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
• normalize (of type bool?, which defaults to null): normalize coefficients. (default: false)
• n (of type bool?, which defaults to null): normalize coefficients. (default: false)
• order (of type int?, which defaults to null): set filter order. (default: 2)
• o (of type int?, which defaults to null): set filter order. (default: 2)
• (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?,
 ?direct : bool?, 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), 6 (ends_with))
• 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
• direct (of type bool?, which defaults to null): reduce buffering when printing to user-set file or pipe. (default: false)
• (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.anlms

Ffmpeg filter: Apply Normalized Least-Mean-Squares algorithm to first audio stream.

Type:

(?order : int?, ?mu : float?, ?eps : float?,
 ?leakage : float?, ?out_mode : int?,
 ffmpeg.filter.graph, ffmpeg.filter.audio,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• order (of type int?, which defaults to null): set the filter order. (default: 256)
• mu (of type float?, which defaults to null): set the filter mu. (default: 0.75)
• eps (of type float?, which defaults to null): set the filter eps. (default: 1.)
• leakage (of type float?, which defaults to null): set the filter leakage. (default: 0.)
• out_mode (of type int?, which defaults to null): set output mode. (default: 2, possible values: 0 (i), 1 (d), 2 (o), 3 (n))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)
• (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), 5 (velvet))
• 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), 5 (velvet))
• 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), 5 (velvet))
• 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.arnndn

Ffmpeg filter: Reduce noise from speech using Recurrent Neural Networks.

Type:

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

Arguments:

• model (of type string?, which defaults to null): set model name
• m (of type string?, which defaults to null): set model name
• (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.asr

Ffmpeg filter: Automatic Speech Recognition.

Type:

(?rate : int?, ?hmm : string?, ?dict : string?,
 ?lm : string?, ?lmctl : string?, ?lmname : string?,
 ?logfn : string?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• rate (of type int?, which defaults to null): set sampling rate. (default: 16000)
• hmm (of type string?, which defaults to null): set directory containing acoustic model files
• dict (of type string?, which defaults to null): set pronunciation dictionary
• lm (of type string?, which defaults to null): set language model file
• lmctl (of type string?, which defaults to null): set language model set
• lmname (of type string?, which defaults to null): set which language model to use
• logfn (of type string?, which defaults to null): set output for log messages. (default: /dev/null)
• (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), 4194304 (Noise_floor), 8388608 (Noise_floor_count), 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), 4194304 (Noise_floor), 8388608 (Noise_floor_count), 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.asubboost

Ffmpeg filter: Boost subwoofer frequencies.

Type:

(?dry : float?, ?wet : float?, ?decay : float?,
 ?feedback : float?, ?cutoff : float?, ?slope : float?,
 ?delay : float?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• dry (of type float?, which defaults to null): set dry gain. (default: 0.5)
• wet (of type float?, which defaults to null): set wet gain. (default: 0.8)
• decay (of type float?, which defaults to null): set decay. (default: 0.7)
• feedback (of type float?, which defaults to null): set feedback. (default: 0.5)
• cutoff (of type float?, which defaults to null): set cutoff. (default: 100.)
• slope (of type float?, which defaults to null): set slope. (default: 0.5)
• delay (of type float?, which defaults to null): set delay. (default: 20.)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)

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?,
 ?a : 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)
• a (of type int?, which defaults to null): set variant of algorithm. (default: 0, possible values: 0 (p), 1 (s))
• (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.axcorrelate

Ffmpeg filter: Cross-correlate two audio streams.

Type:

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

Arguments:

• size (of type int?, which defaults to null): set segment size. (default: 256)
• algo (of type int?, which defaults to null): set alghorithm. (default: 0, possible values: 0 (slow), 1 (fast))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.audio)
• (unlabeled) (of type ffmpeg.filter.audio)

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?, ?normalize : bool?, ?n : bool?,
 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
• normalize (of type bool?, which defaults to null): normalize coefficients. (default: false)
• n (of type bool?, which defaults to null): normalize coefficients. (default: false)
• (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?,
 ?normalize : bool?, ?n : bool?, 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
• normalize (of type bool?, which defaults to null): normalize coefficients. (default: false)
• n (of type bool?, which defaults to null): normalize coefficients. (default: false)
• (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?, ?normalize : bool?,
 ?n : bool?, 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
• normalize (of type bool?, which defaults to null): normalize coefficients. (default: false)
• n (of type bool?, which defaults to null): normalize coefficients. (default: false)
• (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.bilateral

Ffmpeg filter: Apply Bilateral filter.

Type:

(?sigmaS : float?, ?sigmaR : float?, ?planes : int?,
 ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• sigmaS (of type float?, which defaults to null): set spatial sigma. (default: 0.1)
• sigmaR (of type float?, which defaults to null): set range sigma. (default: 0.1)
• planes (of type int?, which defaults to null): set planes to filter. (default: 1)
• (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?, ?normalize : bool?,
 ?n : bool?, 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
• normalize (of type bool?, which defaults to null): normalize coefficients. (default: false)
• n (of type bool?, which defaults to null): normalize coefficients. (default: false)
• (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 : bool?, ?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 bool?, which defaults to null): have reference stream. (default: false)
• 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.cas

Ffmpeg filter: Contrast Adaptive Sharpen.

Type:

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

Arguments:

• strength (of type float?, which defaults to null): set the sharpening strength. (default: 0.)
• 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.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), 9 (dcip3))
• 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), 512 (dcip3))
• 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?, ?pl : bool?, 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.)
• pl (of type bool?, which defaults to null): preserve lightness. (default: false)
• (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), 22 (ebu3213))
• 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), 22 (ebu3213))
• 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?, ?slope : 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)
• slope (of type float?, which defaults to null): set curve slope. (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?,
 ?format : int?, 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)
• format (of type int?, which defaults to null): set display number format. (default: 0, possible values: 0 (hex), 1 (dec))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)

ffmpeg.filter.dblur

Ffmpeg filter: Apply Directional Blur filter.

Type:

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

Arguments:

• angle (of type float?, which defaults to null): set angle. (default: 45.)
• radius (of type float?, which defaults to null): set radius. (default: 5.)
• 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.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_qsv

Ffmpeg filter: QuickSync video deinterlacing

Type:

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

Arguments:

• mode (of type int?, which defaults to null): set deinterlace mode. (default: 2, possible values: 1 (bob), 2 (advanced))
• (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 : string?, ?y : string?, ?w : string?, ?h : string?,
 ?show : bool?, ffmpeg.filter.graph, ffmpeg.filter.video) ->
ffmpeg.filter.video

Arguments:

• x (of type string?, which defaults to null): set logo x position. (default: -1)
• y (of type string?, which defaults to null): set logo y position. (default: -1)
• w (of type string?, which defaults to null): set logo width. (default: -1)
• h (of type string?, 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:

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

Arguments:

• filter_type (of type int?, which defaults to null): filter type(derain/dehaze). (default: 0, possible values: 0 (derain), 1 (dehaze))
• 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.deshake_opencl

Ffmpeg filter: Feature-point based video stabilization filter

Type:

(?tripod : bool?, ?debug : bool?, ?adaptive_crop : bool?,
 ?refine_features : bool?, ?smooth_strength : float?,
 ?smooth_window_multiplier : float?, ffmpeg.filter.graph,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• tripod (of type bool?, which defaults to null): simulates a tripod by preventing any camera movement whatsoever from the original frame. (default: false)
• debug (of type bool?, which defaults to null): turn on additional debugging information. (default: false)
• adaptive_crop (of type bool?, which defaults to null): attempt to subtly crop borders to reduce mirrored content. (default: true)
• refine_features (of type bool?, which defaults to null): refine feature point locations at a sub-pixel level. (default: true)
• smooth_strength (of type float?, which defaults to null): smoothing strength (0 attempts to adaptively determine optimal strength). (default: 0.)
• smooth_window_multiplier (of type float?, which defaults to null): multiplier for number of frames to buffer for motion data. (default: 2.)
• (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.dnn_processing

Ffmpeg filter: Apply DNN processing filter to the input.

Type:

(?dnn_backend : int?, ?model : string?, ?input : string?,
 ?output : 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
• input (of type string?, which defaults to null): input name of the model
• output (of type string?, which defaults to null): output name of the model
• (unlabeled) (of type ffmpeg.filter.graph)
• (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?,
 ?rate : string?, ?r : 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)
• 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.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:

(?framelen : int?, ?f : int?, ?gausssize : int?,
 ?g : int?, ?peak : float?, ?p : float?,
 ?maxgain : float?, ?m : float?, ?targetrms : float?,
 ?r : float?, ?coupling : bool?, ?n : bool?,
 ?correctdc : bool?, ?c : bool?, ?altboundary : bool?,
 ?b : bool?, ?compress : float?, ?s : float?,
 ?threshold : float?, ?t : float?, ffmpeg.filter.graph,
 ffmpeg.filter.audio) -> ffmpeg.filter.audio

Arguments:

• framelen (of type int?, which defaults to null): set the frame length in msec. (default: 500)
• f (of type int?, which defaults to null): set the frame length in msec. (default: 500)
• gausssize (of type int?, which defaults to null): set the filter size. (default: 31)
• g (of type int?, which defaults to null): set the filter size. (default: 31)
• peak (of type float?, which defaults to null): set the peak value. (default: 0.95)
• p (of type float?, which defaults to null): set the peak value. (default: 0.95)
• maxgain (of type float?, which defaults to null): set the max amplification. (default: 10.)
• m (of type float?, which defaults to null): set the max amplification. (default: 10.)
• targetrms (of type float?, which defaults to null): set the target RMS. (default: 0.)
• r (of type float?, which defaults to null): set the target RMS. (default: 0.)
• coupling (of type bool?, which defaults to null): set channel coupling. (default: true)
• n (of type bool?, which defaults to null): set channel coupling. (default: true)
• correctdc (of type bool?, which defaults to null): set DC correction. (default: false)
• c (of type bool?, which defaults to null): set DC correction. (default: false)
• altboundary (of type bool?, which defaults to null): set alternative boundary mode. (default: false)
• b (of type bool?, which defaults to null): set alternative boundary mode. (default: false)
• compress (of type float?, which defaults to null): set the compress factor. (default: 0.)
• s (of type float?, which defaults to null): set the compress factor. (default: 0.)
• threshold (of type float?, which defaults to null): set the threshold value. (default: 0.)
• t (of type float?, which defaults to null): set the threshold value. (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?, ?normalize : bool?,
 ?n : bool?, 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
• normalize (of type bool?, which defaults to null): normalize coefficients. (default: false)
• n (of type bool?, which defaults to null): normalize coefficients. (default: false)
• (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): 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_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.freezeframes

Ffmpeg filter: Freeze video frames.

Type:

(?first : int?, ?last : int?, ?replace : int?,
 ffmpeg.filter.graph, ffmpeg.filter.video,
 ffmpeg.filter.video) -> ffmpeg.filter.video

Arguments:

• first (of type int?, which defaults to null): set first frame to freeze. (default: 0)
• last (of type int?, which defaults to null): set last frame to freeze. (default: 0)
• replace (of type int?, which defaults to null): set frame to replace. (default: 0)
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)
• (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?,
 ?interpolation : int?, ?i : int?, 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
• interpolation (of type int?, which defaults to null): set interpolation method. (default: 1, possible values: 0 (nearest), 0 (n), 1 (bilinear), 1 (b))
• i (of type int?, which defaults to null): set interpolation method. (default: 1, possible values: 0 (nearest), 0 (n), 1 (bilinear), 1 (b))
• (unlabeled) (of type ffmpeg.filter.graph)
• (unlabeled) (of type ffmpeg.filter.video)