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Update for 10-01-22 12:45

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Tyler Perkins 2022-01-10 12:45:01 -05:00
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commit 076e654d28
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tech/development.wiki
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@ -6,6 +6,7 @@
* [[sdl2|SDL2]] - Simple Direct Media Layer (Low level X Windows and graphics) * [[sdl2|SDL2]] - Simple Direct Media Layer (Low level X Windows and graphics)
* [[libcurl|Libcurl]] - Curl the tool, but the API * [[libcurl|Libcurl]] - Curl the tool, but the API
* [[periodictable|Periodic Table]] - Python periodic table * [[periodictable|Periodic Table]] - Python periodic table
* [[ffmpeg]] - video/media library
== Tools == == Tools ==

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tech/ffmpeg.wiki
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= FFmpeg = = FFmpeg =
Command line tool for working with video Command line tool for working with video. Also a library
This is just a collection of common tasks This is just a collection of common tasks
== Rencode as another video == == Rencode as another video ==
@ -19,4 +19,24 @@ 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 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
[[index]] [[index]]