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f7d44804a6
Our code for writing optimal huffman tables is incompatible with using multiple slices and hence commit884506dfe2that implemented this also added an assert that slice_context_count is always 1. Yet this was always wrong: a) The MJPEG-encoder has (and had) the AV_CODEC_CAP_SLICE_THREADS capability, so asserting that it always uses one slice context is incorrect. b) This commit did not add any proper checks that ensured that optimal huffman tables are never used together with multiple slices. This only happened with03eb0515c1. c) This assert is at the wrong place: ff_mjpeg_encode_init() is called before the actual slice_context_count is set. This is the reason why this assert was never triggered. Therefore this commit removes this assert. Also remove an assert from the SpeedHQ encoder sharing b) and c). 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 means to alter decoded audio and video through a directed graph of connected 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.