Michael Niedermayer 8d294ee692
avcodec/j2kenc: Merge dwt_norm into lambda
This moves computations out of a loop

This may help with UB in vsynth*-jpeg2000-yuva444p16

Fixes: signed integer overflow: 31665934879948800 * 9998 cannot be represented in type 'long'
Fixes: 69024/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_JPEG2000_fuzzer-5949662967169024

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit a84fbd747119841942c67d2f55cc796ab25cd245)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-25 20:34:42 +02:00
2024-07-25 20:34:32 +02:00
2024-03-27 01:04:53 +01:00
2022-03-17 18:35:41 -03:00
2024-02-23 00:17:21 +01:00
2024-05-25 22:08:34 +02:00
2023-03-01 21:59:10 +01:00
2019-12-28 11:20:48 +01:00
2024-02-21 18:24:17 +01:00
2024-05-25 22:08:34 +02:00

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.

Description
FFmpeg with added filter to color correct dive videos
Readme 432 MiB
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