b74e47c4ff
This function is quite small (96B with GCC 11.2 on x64 Ubuntu 21.10 at -O3), making it more economical to duplicate it into libavformat instead of exporting it as avpriv: Doing so saves 2x24B in .dynsim, 2x16B in .dynstr, 2x2B .gnu.version, 24B in .rela.plt, 16B in .plt, 16B in .plt.sec (if enabled), 4B .gnu.hash; besides the actual duplicated code this also adds 2x8B .eh_frame_hdr and 24B .eh_frame. In other words: Duplicating is neutral size-wise (it is also presumed neutral for other systems). Given that it avoids the runtime overhead of dynamic symbols, it is advantageouos to duplicate the function. 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.