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e621f2b6cd
av_packet_ref() mostly treated the destination packet dst as uninitialized, i.e. the destination fields were simply overwritten. But if the source packet was not reference-counted, dst->buf was treated as if it pointed to an already allocated buffer (if != NULL) to be reallocated to the desired size. The documentation did not explicitly state whether the dst will be treated as uninitialized, but it stated that if the source packet is not refcounted, a new buffer in dst will be allocated. This and the fact that the side-data as well as the codepath taken in case src is refcounted always treated the packet as uninitialized means that dst should always be treated as uninitialized for the sake of consistency. And this behaviour has been explicitly documented. 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.