63fbeebf6e
This isn't a "version script" in the usual sense, since it doesn't set symbol versions directly. Instead, the version for the whole .dylib is set in the linker flags, and we generate a list of symbol patterns to export. This allows us to keep our local symbols (e.g. ff_*) local on the platform. The Darwin linker's exported_symbols_list format is a bit different than the one used by the GNU linker. It doesn't handle local symbols at all, since when a list is provided, all unlisted symbols are local by default; thus, we remove local sections. It doesn't handle per-version sections, so we remove the headers and brackets. It expects symbols to be prefixed with an underscore. It errors if a listed symbol with no wildcards is not present in the output, so we append an asterisk to any symbol that doesn't already end in one.
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 a mean to alter decoded Audio and Video through chain of 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.
- ffserver is a multimedia streaming server for live broadcasts.
- 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.