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020159e0e7
In the common case that the input packet was already refcounted, ff_interleave_add_packet would allocate a new AVPacketList, use av_packet_ref to create a new reference to the buffer for the AVPacketList's packet, interleave the packet and finally unreference the original input packet. This commit changes this: It uses av_packet_move_ref to transfer the packet to its destination. In case the input packet is refcounted, this saves an allocation and a free (of an AVBufferRef); if not, the packet is made refcounted before moving it. When the input packet has side data, one saves even more than one allocation+free. Furthermore, when the packet is in reality an uncoded frame, a hacky ad-hoc variant of av_packet_move_ref has been employed. Not any more. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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.