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Rémi Denis-Courmont 51945d5ace lavc/aacpsdsp: use restrict qualifier Except for add_squares, telling the compiler that the output vector(s) cannot alias helps quite a bit (cycles on SiFive U74-MC): ps_add_squares_c: 98277.7 ps_add_squares_r: 98320.2 ps_hybrid_analysis_c: 3731.2 ps_hybrid_analysis_r: 2495.7 ps_hybrid_analysis_ileave_c: 20478.0 ps_hybrid_analysis_ileave_r: 16092.2 ps_hybrid_synthesis_deint_c: 19051.5 ps_hybrid_synthesis_deint_r: 15420.0 ps_mul_pair_single_c: 122941.2 ps_mul_pair_single_r: 91035.0		2023-07-17 18:48:42 +03:00
compat	…
doc	avfilter/af_axcorrelate: add another algorithm for calculation	2023-07-15 23:41:09 +02:00
ffbuild	…
fftools	fftools/ffmpeg_enc: Reindentate after the last commit	2023-07-17 16:18:12 +02:00
libavcodec	lavc/aacpsdsp: use restrict qualifier	2023-07-17 18:48:42 +03:00
libavdevice	lavd/opengl: select the GL context before drawing	2023-07-12 15:06:15 +02:00
libavfilter	avfilter/af_axcorrelate: add another algorithm for calculation	2023-07-15 23:41:09 +02:00
libavformat	avformat/hlsenc: use av_random_bytes() for generating AES128 key	2023-07-16 11:48:31 +02:00
libavutil	avutil/random_seed: turn off buffering when reading from random	2023-07-16 11:48:31 +02:00
libpostproc	…
libswresample	…
libswscale	libswscale/riscv: fix syntax of vsetvli	2023-07-13 22:01:24 +03:00
presets	…
tests	fftools/ffmpeg: rework -enc_time_base handling	2023-07-15 11:02:11 +02:00
tools	tools/target_bsf_fuzzer: fix some filter names	2023-06-29 22:44:11 -03:00
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CONTRIBUTING.md	…
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CREDITS	…
Changelog	avformat/rawenc: add H266/VVC muxer	2023-06-29 14:12:50 -03:00
INSTALL.md	…
LICENSE.md	…
MAINTAINERS	MAINTAINERS: change Leo Izen IRC nickname	2023-06-20 12:46:47 -04:00
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README.md	…
RELEASE	…
configure	avformat/hlsenc: use av_random_bytes() for generating AES128 key	2023-07-16 11:48:31 +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 means to alter decoded audio and video through a directed graph of connected 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.