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Michael Niedermayer 8970824856 avcodec/g729postfilter: Clip gain before scaling with AGC_FAC1 
The fixed point integer reference specifies the multiplication used
to have 16bit input and clips so we need to clip the input
The floating point implementation does not seem to do that.

Fixes: signed integer overflow: 6317568 * 410 cannot be represented in type 'int'
Fixes: 20492/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_G729_fuzzer-5700189272932352

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 82d4c7b95e)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2020-07-05 12:43:08 +02:00
compat
doc Update for 2.8.16 2019-12-06 21:00:24 +01:00
libavcodec avcodec/g729postfilter: Clip gain before scaling with AGC_FAC1 2020-07-05 12:43:08 +02:00
libavdevice
libavfilter avfilter/vf_aspect: Fix integer overflow in compute_dar() 2020-04-23 21:29:01 +02:00
libavformat avformat/thp: Require a video stream 2020-07-05 12:43:08 +02:00
libavresample
libavutil avutil/lfg: Correct index increment type to avoid undefined behavior 2019-12-06 20:30:58 +01:00
libpostproc
libswresample
libswscale swscale/yuv2rgb: Fix vertical dither offset with slices 2020-04-23 21:29:01 +02:00
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.