You've already forked FFmpeg
mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2025-08-10 06:10:52 +02:00
115ac90ec9
avpriv_find_start_code() supports non-contiguous buffers by maintaining a state that allows to find start codes that span across multiple buffers; a consequence thereof is that avpriv_find_start_code() is given a zero-sized buffer, it does not modify this state, so that it appears as if a start code was found if the state contained a start code. This can e.g. happen with Sequence End units in MPEG-2 and to counter this, cbs_mpeg2_split_fragment() reset the state when it has already encountered the end of the fragment in order to add the last unit (if it is only of the form 00 00 01 xy) only once; it also used a flag to set whether this is the final unit. Yet this can be improved by simply resetting state unconditionally (thereby avoiding a branch); the flag can be removed by just checking whether we have a valid start code (of the next unit to add) at the end. 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.