03d31ef39c
Once upon a time, mkv_write_block() only wrote a (Simple)Block, not a BlockGroup which is needed for subtitles to convey the duration. But with the introduction of support for writing BlockAdditions and DiscardPadding (both of which require a BlockGroup), mkv_write_block() can also open and close a BlockGroup of its own. This naturally led to some code duplication which is removed in this commit. This new code leads to one regression: It always uses eight bytes for the BlockGroup's length field, whereas the earlier code usually used the lowest amount of bytes needed. This will be fixed in a future commit. This temporary regression is also the reason for changes to the binsub-mksenc and matroska-zero-length-block fate tests. 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.