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9fdc2c7bc4
Up until now, read_frame_internal always initialized the packet it received. But since the recent changes to ff_read_packet, this is no longer needed: If the parsing queue is initially empty upon entering read_frame_internal, the packet will now either contain content upon success or be blank upon failure of ff_read_packet. If the parsing queue is initially not empty, the packet will be overwritten with the oldest one from the parsing queue. Similarly, it is unnecessary to initialize ret in read_frame_internal. In parse_packet, it is easily possible to only initialize the packet used as temporary storage for the output if said packet is used at all; furthermore, this packet doesn't need to be zero-initialized, because av_init_packet will initialize every field except size and data and those fields will be set by av_parser_parse2. 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.