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Lynne 377a095dc3
vc2enc: zero padding of the coefficient buffer 
Wavelet types with large amounts of overreading/writing like 9_7 would
write into the padding at high wavelet depths, which would remain and be
read by the next frame's transform and quickly cause artifacts to appear
for subsequent frames.
This fix affects all frames encoded with a non-power-of-two width, with
the artifacts varying between non-observable to very noticeable,
depending on encoder settings, so reencoding is advisable.
2019-12-17 14:56:33 +00:00
compat
doc avfilter: Add tonemap vaapi filter for H2S 2019-12-17 07:49:49 +08:00
ffbuild
fftools configure: Check for the SetDllDirectory and GetModuleHandle functions 2019-12-13 10:53:05 +02:00
libavcodec vc2enc: zero padding of the coefficient buffer 2019-12-17 14:56:33 +00:00
libavdevice avdevice/xcbgrab: wrap non-shm image replies in a buffer ref 2019-12-06 10:09:49 +01:00
libavfilter avfilter/vf_stack: set framerate to VFR when inputs frame rates differs 2019-12-17 13:30:16 +01:00
libavformat avformat: Don't free old extradata before ff_alloc/get_extradata 2019-12-12 19:25:33 +01:00
libavresample
libavutil lavu/log: Also print the log level for level trace. 2019-12-16 20:53:27 +01:00
libpostproc
libswresample
libswscale swscale/swscale_unscaled: add AV_PIX_FMT_GBRAP10 for LE and BE conversion wrapper 2019-12-10 16:09:14 +01:00
presets
tests fate: Add an option for disabling the 2k/4k tests 2019-12-17 10:22:29 +02:00
tools tools/target_dec_fuzzer: Adjust threshold for dst 2019-12-15 01:01:22 +01:00
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Changelog Changelog: add entry about MPEG-H 3D Audio support in mp4 2019-12-12 12:03:31 -03:00
configure fate: Add an option for disabling the 2k/4k tests 2019-12-17 10:22:29 +02:00
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MAINTAINERS MAINTAINERS: add myself as libxavs2 maintainer 2019-12-07 19:34:57 +01:00
Makefile tools: add a fuzzer tool for bitstream filters 2019-12-05 20:49:15 -03:00
README.md
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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.