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Leo Izen 5cf0bc4236
avcodec/pngenc: avoid writing cICP when inappropriate
We parse the fallback cHRM on decode and correctly determine that we
have BT.709 primaries, but unknown TRC. This causes us to write cICP
where we shouldn't. Primaries without transfer can be handled entirely
by cHRM, so we should only write cICP if we actually know the transfer
function.

Additionally, we should avoid writing cICP if there's an ICC profile
because the spec says decoders must prioritize cICP over the ICC
profile.

Signed-off-by: Leo Izen <leo.izen@gmail.com>
2023-02-08 08:50:34 -05:00
compat
doc lavc/decode: allow using AV_CODEC_FLAG_COPY_OPAQUE for decoding 2023-02-04 13:14:20 +01:00
ffbuild
fftools ffmpeg: add video heartbeat capability to fix_sub_duration 2023-02-03 16:17:29 +02:00
libavcodec avcodec/pngenc: avoid writing cICP when inappropriate 2023-02-08 08:50:34 -05:00
libavdevice avdevice/avfoundation: convert to new channel layout-API 2022-11-08 14:08:05 -03:00
libavfilter avfilter/af_pan: fix regression introduced with switch to new channel layout API 2023-02-07 18:28:57 +01:00
libavformat avcodec/wavarc: add support for 0CPY 2023-02-07 17:13:11 +01:00
libavutil lavu/hwcontext_qsv: add support for UYVY 2023-02-07 09:51:37 +08:00
libpostproc postproc/postprocess_template: Fix alignment 2022-11-09 17:39:00 +01:00
libswresample x86: replace explicit REP_RETs with RETs 2023-02-01 04:23:55 +01:00
libswscale x86: replace explicit REP_RETs with RETs 2023-02-01 04:23:55 +01:00
presets
tests ffmpeg: add video heartbeat capability to fix_sub_duration 2023-02-03 16:17:29 +02:00
tools tools/target_dec_fuzzer: Adjust threshold for BONK 2023-02-01 20:23:36 +01:00
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Changelog lavc: deprecate CrystalHD decoders 2023-02-04 13:12:28 +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.