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Leo Izen 18883fbcab
avcodec/jpegxl_parser: fix reading lz77-pair as initial entropy symbol 
The JPEG XL parser has an entropy decoder inside, which supports LZ77
length-distance pairs. If the first symbol from the entropy stream is an
LZ77 pair, the bitstream is invalid, so we should abort immediately rather
than attempt to read it anyway (which would read from the uninitialized
starting window).

Reported-by: Kacper Michajłow <kasper93@gmail.com>
Found-by: ossfuzz
Fixes: 368725676/clusterfuzz-testcase-minimized-fuzzer_protocol_file-6022251122589696-cut
Fixes: 42537758/clusterfuzz-testcase-minimized-fuzzer_protocol_file-5818969469026304-cut
Signed-off-by: Leo Izen <leo.izen@gmail.com>
2024-11-13 10:26:28 -05:00
compat compat: Fix the fallback definition of stdc_trailing_zeros 2024-09-24 14:00:27 +03:00
doc doc/infra: add reddit sub, facebook page and wikipedia 2024-11-13 08:04:13 +10:00
ffbuild configure: Add detection of assembler support for SVE/SVE2 2024-09-27 00:03:04 +03:00
fftools fftools/ffplay: fix crash when vk renderer is null 2024-11-06 16:34:02 +08:00
libavcodec avcodec/jpegxl_parser: fix reading lz77-pair as initial entropy symbol 2024-11-13 10:26:28 -05:00
libavdevice avdevice/dshow: fix unused variable warning 2024-10-17 13:04:17 +02:00
libavfilter avfilter/f_loop: fix aloop activate logic 2024-11-11 21:56:34 +01:00
libavformat avformat/mov: check that items are allocated before accessing them 2024-11-12 12:23:32 -03:00
libavutil libavutil/hwcontext_{d3d11va, dxva2}: Support Y212/XV36 pixel format 2024-11-05 10:28:03 +08:00
libpostproc */version.h: bump after release/7.1 branch 2024-09-24 17:10:35 +02:00
libswresample arm: Consistently use proper interworking function returns 2024-10-09 15:52:51 +03:00
libswscale x86/swscale: disable AVX2 yuv2nv12cX functions if accurate_rnd is requested 2024-11-07 11:16:42 -03:00
presets
tests fate/pixfmt: reintroduce scale filter dependency for some tests 2024-11-10 20:22:22 -03:00
tools enc_recon_frame_test: don't print an error on EOF. 2024-11-13 09:26:22 -05:00
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Changelog lavc: deprecate the omx encoders 2024-11-09 02:46:17 +01:00
configure lavc: deprecate the omx encoders 2024-11-09 02:46:17 +01:00
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RELEASE RELEASE: update release number after release/7.1 branch 2024-10-09 01:55:50 +02:00

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.