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Hendrik Leppkes 1c19e2c82d
avcodec/nvdec_mpeg2: fix order of quant matrix coefficients
The matrix coefficients are stored permutated for the IDCT,
rather then in plain raster order, and need to be un-permutated
for the hardware.
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fftools fftools/ffmpeg_opt: Fix leak of options when parsing options fails 2022-05-04 20:00:05 +02:00
libavcodec avcodec/nvdec_mpeg2: fix order of quant matrix coefficients 2023-05-15 18:49:40 +02:00
libavdevice Bump minor versions to separate 4.2 from master 2019-07-21 18:36:18 +02:00
libavfilter avfilter/vf_showinfo: remove backspaces 2022-10-09 21:33:04 +02:00
libavformat avformat/mov: Check samplesize and offset to avoid integer overflow 2023-04-21 01:55:13 +02:00
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libavutil avutil/mathematics: Document av_rescale_rnd() behavior on non int64 results 2022-04-07 16:26:59 +02:00
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tests avcodec/snowenc: Fix visual weight calculation 2023-04-21 01:55:18 +02:00
tools tools/cws2fws: Check read() for failure 2021-10-06 13:54:16 +02:00
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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.
  • 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.