OCaml package documentation

1. ffmpeg 1.2.8
2. ffmpeg-av 1.2.8
3. ffmpeg-avcodec 1.2.8
4. ffmpeg-avdevice 1.2.8
5. ffmpeg-avfilter 1.2.8
6. ffmpeg-avutil 1.2.8
7. ffmpeg-swresample 1.2.8
8. ffmpeg-swscale 1.2.8