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The cosmetic-changes policy in developer.texi was written during the SVN era, when reviewing indentation changes mixed with functional changes was genuinely difficult. Since FFmpeg has moved to Git, reviewers now have simple built-in tools to ignore whitespace changes: git diff -w git log -p --ignore-all-space Forgejo's pull request UI also offers a 'Hide whitespace changes' toggle, making it trivial to focus on the functional diff. For those who prefer reviewing patches in their mail client, the same result can be achieved by saving the patch and running: git apply --ignore-whitespace <patch> && git diff -w Relax the policy so that indentation changes which are invisible to git diff --ignore-all-space may accompany functional changes, while still requiring non-whitespace cosmetic changes to be in separate commits. Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
FFmpeg README
FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.
Libraries
libavcodecprovides implementation of a wider range of codecs.libavformatimplements streaming protocols, container formats and basic I/O access.libavutilincludes hashers, decompressors and miscellaneous utility functions.libavfilterprovides means to alter decoded audio and video through a directed graph of connected filters.libavdeviceprovides an abstraction to access capture and playback devices.libswresampleimplements audio mixing and resampling routines.libswscaleimplements 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,ismindexandqt-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.