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Michael Niedermayer a604063ede
swscale/input: Use more unsigned intermediates 
Same principle as previous commit, with sufficiently huge rgb2yuv table
values this produces wrong results and undefined behavior.
The unsigned produces the same incorrect results. That is probably
ok as these cases with huge values seem not to occur in any real
use case.

Fixes: signed integer overflow
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit ba209e3d51)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 		2023-04-21 01:55:09 +02:00
compat
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doc Update for 4.2.8 2022-10-09 22:09:57 +02:00
ffbuild
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fftools fftools/ffmpeg_opt: Fix leak of options when parsing options fails 2022-05-04 20:00:05 +02:00
libavcodec avcodec/alsdec: The minimal block is at least 7 bits 2023-04-21 01:55:08 +02:00
libavdevice
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libavfilter avfilter/vf_showinfo: remove backspaces 2022-10-09 21:33:04 +02:00
libavformat avformat/replaygain: avoid undefined / negative abs 2023-04-21 01:55:08 +02:00
libavresample
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libavutil avutil/mathematics: Document av_rescale_rnd() behavior on non int64 results 2022-04-07 16:26:59 +02:00
libpostproc
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libswresample
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libswscale swscale/input: Use more unsigned intermediates 2023-04-21 01:55:09 +02:00
presets
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tests checkasm: float_dsp: Scale FLT/DBL_EPSILON sufficiently when comparing 2022-11-06 20:49:24 +01:00
tools tools/cws2fws: Check read() for failure 2021-10-06 13:54:16 +02:00
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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 a mean to alter decoded Audio and Video through chain of 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.