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Oneric 95115fcc18 avcodec/ass: accurately preserve colours Colour values used in ASS files without a "YCbCr Matrix" header set to "None" are subject to colour mangling, due to how ASS was historically conceived. A more in-depth description can be found in the documetation inside libass' public ass_types.h header. The important part is, if this header is not set to "None", the final output colours can deviate from the literal value specified in the file. When converting from non-ASS formats we do not want any colour shift to happen, so let's set the appropiate header. NB: ffmpeg's subtitle filter, does not follow libass' documentation regarding colour mangling, thus hiding the bug. Anything based on VSFilter, XySubFilter or e.g. mpv do and might show the issue. (Of course native ASS subs, which _do_ rely on colour mangling won't work properly with the subtitle filter, but this can be fixed another time)		2022-12-03 19:08:39 +01:00
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doc	doc/examples/metadata: use av_dict_iterate	2022-12-01 11:21:14 +01:00
ffbuild	…
fftools	fftools: use av_dict_get_string	2022-12-01 11:21:14 +01:00
libavcodec	avcodec/ass: accurately preserve colours	2022-12-03 19:08:39 +01:00
libavdevice	…
libavfilter	avfilter/af_astats: accessing outlink in uninit is not valid	2022-12-03 17:32:07 +01:00
libavformat	avformat/fifo: use av_dict_iterate	2022-12-01 11:21:15 +01:00
libavutil	…
libpostproc	…
libswresample	…
libswscale	…
presets	…
tests	avcodec/ass: accurately preserve colours	2022-12-03 19:08:39 +01:00
tools	tools/target_dec_fuzzer: Adjust threshold for RSCC	2022-12-01 21:43:57 +01:00
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README.md

FFmpeg README

FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.

Libraries

libavcodec provides implementation of a wider range of codecs.
libavformat implements streaming protocols, container formats and basic I/O access.
libavutil includes hashers, decompressors and miscellaneous utility functions.
libavfilter provides means to alter decoded audio and video through a directed graph of connected filters.
libavdevice provides an abstraction to access capture and playback devices.
libswresample implements audio mixing and resampling routines.
libswscale implements 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, ismindex and qt-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.