45314ff21a
Up until now, the TrackUID of a Matroska track which is supposed to be random was not random at all: It always coincided with the TrackNumber which is usually the 1-based index of the corresponding stream in the array of AVStreams. This has been changed: It is now set via an AVLFG if AVFMT_FLAG_BITEXACT is not set. Otherwise it is set like it is set now (the only change happens if an explicit track number has been chosen via dash_track_number, because the system used in the normal situation is now used, too). In particular, no FATE tests need to be updated. This also fixes a bug in case the dash_track_number option was used: In this case the TrackUID was set to the provided number, but the tags were written with a TagTrackUID simply based upon the index, so that the tags didn't apply to the track they ought to apply to. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.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 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.
- 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.