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Timo Rothenpieler cb8ad005bb avutil/half2float: adjust conversion of NaN 
IEEE-754 differentiates two different kind of NaNs.
Quiet and Signaling ones. They are differentiated by the MSB of the
mantissa.

For whatever reason, actual hardware conversion of half to single always
sets the signaling bit to 1 if the mantissa is != 0, and to 0 if it's 0.
So our code has to follow suite or fate-testing hardware float16 will be
impossible.
 		2022-08-19 22:09:36 +02:00
compat compat: add msvc windres wrapper 2022-08-13 14:42:52 +02:00
doc doc: fix binary values of SI prefixes 2022-08-18 17:10:42 +02:00
ffbuild ffbuild/common: Fix CPPFLAGS applied for compiling C++ files 2022-05-24 21:30:52 +02:00
fftools ffprobe: restore reporting error code for failed inputs 2022-08-17 16:46:05 +05:30
libavcodec avutil/half2float: adjust conversion of NaN 2022-08-19 22:09:36 +02:00
libavdevice configure: always enable gnu_windres if available 2022-08-13 14:42:36 +02:00
libavfilter avfilter/vsrc_ddagrab: add options for more control over output format fallback 2022-08-13 15:22:14 +02:00
libavformat mov: Compare frag times in correct time base when seeking a stream without a corresponding sidx 2022-08-19 17:02:55 +01:00
libavutil avutil/half2float: adjust conversion of NaN 2022-08-19 22:09:36 +02:00
libpostproc configure: always enable gnu_windres if available 2022-08-13 14:42:36 +02:00
libswresample configure: always enable gnu_windres if available 2022-08-13 14:42:36 +02:00
libswscale swscale/x86/yuv2yuvX: Remove unused ff_yuv2yuvX_mmx() 2022-08-19 12:01:34 +02:00
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tools tools: Make sure to create the tools directory before building decode_simple.o 2022-08-17 00:00:50 +03:00
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Changelog lavc/vaapi_encode: enable 8bit 4:4:4 encoding for HEVC and VP9 2022-08-09 09:22:49 -07:00
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RELEASE RELEASE: update after 5.1 branch 2022-07-13 00:31:42 +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 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.