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Andreas Rheinhardt d4d87f2ac5 avcodec/mpegvideo: Fix crash when using lowres with 10bit MPEG-4 
In this case the macroblocks written to are smaller, yet
the MPEG-4 Simple Studio Profile code for 10bit DPCM ignored this;
e.g. in case of lowres = 2 or = 3, the sample mpeg4_sstp_dpcm.m4v
from the FATE-suite reads beyond the end of the buffer.

This commit fixes this by taking lowres into account.
The DPCM macroblocks of the aforementioned sample look
as good as can be expected after this patch; yet the non-DPCM
coded macroblocks are simply corrupt.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 		2022-01-29 19:30:25 +01:00
compat
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doc lavc/qsvenc: add tile encoding support for VP9 2022-01-29 12:02:52 +08:00
ffbuild
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fftools fftools/cmdutils: Fix undefined 1 << 31 2022-01-11 00:20:35 +01:00
libavcodec avcodec/mpegvideo: Fix crash when using lowres with 10bit MPEG-4 2022-01-29 19:30:25 +01:00
libavdevice
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libavfilter avfilter/vf_v360: improve xyz_to_fisheye() 2022-01-29 17:36:37 +01:00
libavformat avformat/hls: Remove redundant cast 2022-01-21 16:47:38 +01:00
libavutil avutil/hwcontext_qsv: fix typo 2022-01-29 15:37:38 +01:00
libpostproc
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libswresample
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libswscale swscale/x86/swscale: Remove superfluous and invalid ';' 2022-01-22 17:00:45 +01:00
presets
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tests lavc/h264: move some shared code from h264dec to h264_parse 2022-01-26 15:23:30 +01:00
tools
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.gitignore
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.mailmap
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.travis.yml
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CONTRIBUTING.md
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COPYING.GPLv2
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COPYING.GPLv3
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COPYING.LGPLv2.1
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COPYING.LGPLv3
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CREDITS
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Changelog
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INSTALL.md
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LICENSE.md
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MAINTAINERS
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Makefile
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README.md
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RELEASE
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configure configure: add libplacebo to help message 2022-01-27 10:05:27 +01:00

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.