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Before FFmpeg commit531b0a316b, FFmpeg used REG_SP as macro for the stack pointer, yet this clashed with a REG_SP define in Solaris system headers, so it was changed to REG_sp and a comment was added for this. Libav fixed it by adding an FF_ prefix to the macros in1e9c5bf4c1. FFmpeg switched to using these prefixes in9eb3da2f99, using FF_REG_sp instead of Libav's FF_REG_SP. In said commit the comment was changed to claim that Solaris system headers define FF_REG_SP, but this is (most likely) wrong. This commit removes the wrong comment and renames the (actually unused) macro to FF_REG_SP to make it consistent with FF_REG_BP. Reviewed-by: Lynne <dev@lynne.ee> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.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.