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a4d036965d
Before 8d78e90a6ba96646f7f25aff6ca3e12e71cec164 the Matroska demuxer used stack packets to hold temporary packets; now it uses a temporary packet allocated by the Matroska demuxer. Yet because it used stack packets the code has always properly reset the packet on error, while on success these temporary packets were put into a packet list via avpriv_packet_list_put(), which already resets the source packet. This means that this code is compatible with just reusing AVFormatInternal.parse_pkt (which is unused while one is in the demuxer's read_packet() function). Compared to before 8d78e90a6 this no longer wastes one initialization per AVPacket read (the resetting of the stack packet performed by av_packet_move_ref() in avpriv_packet_list_put() was for naught). 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.