= FFmpeg =

Command line tool for working with video. Also a library
This is just a collection of common tasks

== Rencode as another video ==

{{{
ffmpeg -i in.mkv out.mp4
  }}}

== Export clip from video ==

This will grab a clip starting at 30s that lasts for 10s

All timestamps must be of format HH:MM:SS.xxx

{{{
ffmpeg -i in.mp4 -ss 00:00:30.0 -c copy -t 00:00:10.0 out.mp4
  }}}

== Library ==

The C library for ffmpeg has poor documentation.

Movie files consist of several components in the FFMPEG model.

- Container 
  - The file itself
  - MKV, AVI, etc
- Streams 
  - Several streams in a container
  - IE audio stream, video stream, subtitle stream, etc
- Frames 
  - Elements or samples of a stream
- Codec 
  - Define how data is encoded and decoded 
  - MP3, DivX, x264, etc
- Packets 
  - Bits of data in a stream that are decoded into raw frames

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