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f7bab37c8e
If an sRGB chunk is present in the PNG file, this commit will cause the png decoder to ignore the cHRM and gAMA chunks and tag the resulting AVFrames with BT.709 primaries, and ISO/IEC 61966-2-1 transfer. If these tags are present in the AVFrame, pngenc.c already writes this chunk, so no change was needed on the encode-side. The PNG spec does not define what happens if sRGB and iCCP are present at the same time, it just recommends that this not happen. As of this patch, the decoder will have the ICC profile take precedence, and it will not tag the pixel data as sRGB. Signed-off-by: Leo Izen <leo.izen@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 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.