2021-10-11 03:22:53 +00:00
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= FFmpeg =
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2022-01-10 17:45:01 +00:00
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Command line tool for working with video. Also a library
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2021-10-11 03:22:53 +00:00
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This is just a collection of common tasks
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== Rencode as another video ==
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{{{
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ffmpeg -i in.mkv out.mp4
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}}}
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== Export clip from video ==
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This will grab a clip starting at 30s that lasts for 10s
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All timestamps must be of format HH:MM:SS.xxx
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{{{
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ffmpeg -i in.mp4 -ss 00:00:30.0 -c copy -t 00:00:10.0 out.mp4
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}}}
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2022-01-10 17:45:01 +00:00
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== Library ==
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2022-01-10 18:15:01 +00:00
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The C library for ffmpeg has poor documentation. It is also known as
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*libav*
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2022-01-10 17:45:01 +00:00
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Movie files consist of several components in the FFMPEG model.
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- Container
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- The file itself
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- MKV, AVI, etc
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- Streams
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- Several streams in a container
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- IE audio stream, video stream, subtitle stream, etc
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- Frames
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- Elements or samples of a stream
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- Codec
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- Define how data is encoded and decoded
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- MP3, DivX, x264, etc
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- Packets
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- Bits of data in a stream that are decoded into raw frames
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2021-10-11 03:22:53 +00:00
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[[index]]
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