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FFmpeg git repo
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Lynne 83fa39eb06
lavfi/vulkan: use av_get_random_seed instead of rand 
We need at least a few bits of entropy to determine the start index of each
queue, in order to let filters run in parallel as much as possible, and
rand() is not thread safe and disrupts any external API's usage of rand,
so instead replace it with av_get_random_seed.
While it has more overhead than rand, we only run it once per filter upon init.
 		2020-05-29 13:10:58 +01:00
compat compat/avisynth: remove avisynth headers 2020-04-05 01:17:55 +02:00
doc doc: add dia_size option documentation 2020-05-28 12:42:41 +08:00
ffbuild common.mak: Also clean Windows debug files. 2020-03-21 18:46:00 +01:00
fftools fftools/ffmpeg: add new abort_on flag which aborts if there is a stream which received no packets 2020-05-26 21:50:50 +02:00
libavcodec lavc/libx264: misc style fixes 2020-05-28 15:56:06 +08:00
libavdevice avdevice/v4l2enc: Allow writing non-rawvideos to v4l2. 2020-05-09 15:44:43 +01:00
libavfilter lavfi/vulkan: use av_get_random_seed instead of rand 2020-05-29 13:10:58 +01:00
libavformat avformat/oggdec: Avoid duplicating buffer when adding side-data 2020-05-28 12:04:26 +02:00
libavresample
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libavutil Use gcc/clang builtins for av_sat_(add|sub)_64_c if available. 2020-05-27 21:05:52 +02:00
libpostproc libavcodec, libpostproc: Remove outcommented START/STOP_TIMER 2020-03-14 18:24:04 +01:00
libswresample Silence "string-plus-int" warning shown by clang. 2020-01-06 22:38:56 +01:00
libswscale swscale: aarch64: Add a NEON implementation of interleaveBytes 2020-05-15 23:38:17 +03:00
presets
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tests dnn-layer-mathunary-test: add unit test for abs 2020-05-28 11:04:21 +08:00
tools dnn_backend_native_layer_mathunary: add abs support 2020-05-28 11:04:21 +08:00
.gitattributes
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.gitignore
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.mailmap mailmap: fix 3-address entries 2020-03-31 04:14:14 -05:00
.travis.yml
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CONTRIBUTING.md
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COPYING.GPLv2
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CREDITS
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Changelog avcodec: add adpcm_ima_ssi encoder 2020-05-27 22:13:39 +02:00
INSTALL.md
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LICENSE.md avfilter/vf_geq: Relicense to LGPL 2019-12-28 11:20:48 +01:00
MAINTAINERS oggdec: remove the oggparsedaala subdemuxer 2020-05-23 19:07:20 +01:00
Makefile Makefile: Delete more created files when running "make distclean". 2020-03-11 11:43:01 +01:00
README.md
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RELEASE
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configure configure: NotchLC depends on lzf 2020-05-27 15:22:35 +02:00

README.md

FFmpeg README

FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.

Libraries

  • libavcodec provides implementation of a wider range of codecs.
  • libavformat implements streaming protocols, container formats and basic I/O access.
  • libavutil includes hashers, decompressors and miscellaneous utility functions.
  • libavfilter provides a mean to alter decoded Audio and Video through chain of filters.
  • libavdevice provides an abstraction to access capture and playback devices.
  • libswresample implements audio mixing and resampling routines.
  • libswscale implements color conversion and scaling routines.

Tools

  • ffmpeg is a command line toolbox to manipulate, convert and stream multimedia content.
  • ffplay is a minimalistic multimedia player.
  • ffprobe is a simple analysis tool to inspect multimedia content.
  • Additional small tools such as aviocat, ismindex and qt-faststart.

Documentation

The offline documentation is available in the doc/ directory.

The online documentation is available in the main website and in the wiki.

Examples

Coding examples are available in the doc/examples directory.

License

FFmpeg codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.

Contributing

Patches should be submitted to the ffmpeg-devel mailing list using git format-patch or git send-email. Github pull requests should be avoided because they are not part of our review process and will be ignored.