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Rostislav Pehlivanov 70eb77b34e mdct15: add inverse transform postrotation SIMD 
2.5ms frames:
Before   (c):  2638 decicycles in postrotate, 2097040 runs,    112 skips
After (sse3):  1467 decicycles in postrotate, 2097083 runs,     69 skips
After (avx2):  1244 decicycles in postrotate, 2097085 runs,     67 skips

5ms frames:
Before   (c):  4987 decicycles in postrotate, 1048371 runs,    205 skips
After (sse3):  2644 decicycles in postrotate, 1048509 runs,     67 skips
After (avx2):  2031 decicycles in postrotate, 1048523 runs,     53 skips

10ms frames:
Before   (c):  9153 decicycles in postrotate,  523575 runs,    713 skips
After (sse3):  5110 decicycles in postrotate,  523726 runs,    562 skips
After (avx2):  3738 decicycles in postrotate,  524223 runs,     65 skips

20ms frames:
Before   (c): 17857 decicycles in postrotate,  261866 runs,    278 skips
After (sse3): 10041 decicycles in postrotate,  261746 runs,    398 skips
After (avx2):  7050 decicycles in postrotate,  262116 runs,     28 skips

Improves total decoding performance for real world content by 9% with avx2.

Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
2017-07-30 07:38:39 +01:00
compat win32_dlfcn: Support WinRT/UWP. 2017-07-30 14:30:43 +10:00
doc examples/hw_decode: Add a HWAccel decoding example. 2017-07-30 00:15:05 +01:00
ffbuild
libavcodec mdct15: add inverse transform postrotation SIMD 2017-07-30 07:38:39 +01:00
libavdevice
libavfilter lavfi/testsrc2: fix completely transparent alpha. 2017-07-25 09:27:35 +02:00
libavformat lavf/os_support: Use existing WinRT config value. 2017-07-30 14:31:04 +10:00
libavresample
libavutil fate: update pixfmt_best test to check for endianness 2017-07-27 08:53:37 +02:00
libpostproc
libswresample
libswscale
presets
tests fate: update pixfmt_best test to check for endianness 2017-07-27 08:53:37 +02:00
tools
.gitattributes
.gitignore
.travis.yml
Changelog
cmdutils_opencl.c
cmdutils.c
cmdutils.h
configure examples/hw_decode: Add a HWAccel decoding example. 2017-07-30 00:15:05 +01:00
CONTRIBUTING.md
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
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CREDITS
ffmpeg_cuvid.c
ffmpeg_filter.c
ffmpeg_hw.c
ffmpeg_opt.c
ffmpeg_qsv.c
ffmpeg_videotoolbox.c
ffmpeg.c
ffmpeg.h
ffplay.c
ffprobe.c ffprobe: add support for ICC Profile frame side data 2017-07-26 11:31:17 -03:00
ffserver_config.c
ffserver_config.h
ffserver.c
INSTALL.md
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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.
  • 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.

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.