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Michael Niedermayer 76c86b0ad9 avcodec/apedec: Fix several integer overflows in predictor_update_filter() and do_apply_filter() 
Fixes: negation of -2147483648 cannot be represented in type 'int'; cast to an unsigned type to negate this value to itself
Fixes: signed integer overflow: -14527961 - 2147483425 cannot be represented in type 'int'
Fixes: 16380/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APE_fuzzer-5645957131141120
Fixes: 16968/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APE_fuzzer-5716169901735936
Fixes: 17074/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APE_fuzzer-5198710497083392

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 1e95a3e8a7)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2019-12-06 20:30:57 +01:00
compat
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libavcodec avcodec/apedec: Fix several integer overflows in predictor_update_filter() and do_apply_filter() 2019-12-06 20:30:57 +01:00
libavdevice
libavfilter
libavformat avformat/cdxl: Fix integer overflow in intermediate 2019-12-06 20:30:57 +01:00
libavresample
libavutil avutil/avstring: Fix bug and undefined behavior in av_strncasecmp() 2019-12-02 19:41:48 +01:00
libpostproc
libswresample
libswscale libswcale: Fix possible string overflow in test. 2019-12-02 19:41:48 +01:00
presets
tests avcodec/vp56rac: delay signaling an error on truncated input 2019-12-06 20:30:57 +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 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.
  • ffserver is a multimedia streaming server for live broadcasts.
  • 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.