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9e13df3776
Compared to the earlier behaviour the following changes: a) AVCodecInternal.byte_buffer is freed. b) The last_pkt_props FIFO is emptied before freeing it. c) If set AVCodecContext.hwaccel is uninitialized and its private data is freed; hw_frames_ctx and hw_device_ctx are also unreferenced. d) coded_side_data is freed. e) active_thread_type is reset. a), b), d) should be no-ops as the buffer/fifo should be empty and no coded_side_data should exist at any point of avcodec_open2(). e) is obviously not bad. c) is in accordance with the documentation of hw_(frames|device)_ctx which states that libacodec takes over ownership of these references. At least in the case of VC-1 it is possible for the hw acceleration to be set during init and in this case freeing it actually fixes a memleak. avcodec_close() needed only minor adjustments to make it work with a potentially not fully initialized codec. 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 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.