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Rémi Denis-Courmont 7a24d794f6 Revert "lavu/timer: remove gratuitous volatile"
It does not make much sense to me, but GCC somehow optimises the
inline assembler even though the output is very obviously used and
having observable side effects.

This reverts commit 09731fbfc3.
2023-09-28 17:48:18 +03:00
compat configure: Set WIN32_LEAN_AND_MEAN at configure time 2023-08-14 22:57:28 +03:00
doc doc/filters: add missing anchors 2023-09-27 20:39:08 -03:00
ffbuild configure: probe RISC-V Vector extension 2022-09-27 13:19:52 +02:00
fftools fftools/ffmpeg: deprecate the -top option 2023-09-18 17:16:06 +02:00
libavcodec avcodec/error_resilience: Remove set-but-not-used variable 2023-09-28 11:10:35 +02:00
libavdevice avdevice/fbdev_common: Make declaration proper prototype 2023-09-28 11:10:35 +02:00
libavfilter lavfi/framequeue: remove redundant logic code 2023-09-28 09:25:02 +02:00
libavformat avformat/mov: Avoid cloning encryption info if its unchanged 2023-09-22 23:47:39 +02:00
libavutil Revert "lavu/timer: remove gratuitous volatile" 2023-09-28 17:48:18 +03:00
libpostproc version.h: Bump minor post 6.0 branch 2023-02-19 18:37:36 +01:00
libswresample libswresample/swresample: avoid s16p internal transfer format 2023-09-25 21:41:35 +02:00
libswscale avutil/internal: Don't auto-include emms.h 2023-09-04 11:04:45 +02:00
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tests checkasm/motion: Don't allocate AVCodecContext 2023-09-28 00:17:47 +02:00
tools tools/target_dec_fuzzer: Adjust threshold for rtv1 2023-09-22 23:47:40 +02:00
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Changelog lavc/vaapi_encode: Add VAAPI AV1 encoder 2023-09-22 13:15:00 +08:00
configure avfilter: add libvmaf_cuda 2023-09-27 10:22:33 -07:00
CONTRIBUTING.md
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INSTALL.md INSTALL.md: Fix Markdown formatting 2019-01-31 10:29:16 -09:00
LICENSE.md avfilter/vf_geq: Relicense to LGPL 2019-12-28 11:20:48 +01:00
MAINTAINERS MAINTAINERS: change Leo Izen IRC nickname 2023-06-20 12:46:47 -04:00
Makefile tools: add an AV_CODEC_CAP_ENCODER_RECON_FRAME test tool 2023-03-28 13:00:42 +02:00
README.md README: fix typo and description of libavfilter 2021-10-08 09:44:34 +05:30
RELEASE RELEASE: update after 5.1 branch 2022-07-13 00:31:42 +02:00

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.