videolan/ffmpeg
1
Fork 0
mirror of https://git.videolan.org/git/ffmpeg.git synced 2024-08-28 04:06:12 +02:00
Code Releases Activity
93,467 Commits 36 Branches 398 Tags 235 MiB
C 90.3%
Assembly 7.8%
Makefile 1.3%
C++ 0.2%
Objective-C 0.2%
Other 0.1%
681957b88d
Go to file
Lauri Kasanen 681957b88d swscale/ppc: VSX-optimize yuv2rgb_full 
./ffmpeg -f lavfi -i yuvtestsrc=duration=1:size=1200x1440 \
        -s 1200x1440 -f null -vframes 100 -pix_fmt $i -nostats \
        -cpuflags 0 -v error -

This uses 32-bit mul, so POWER8 only.

The following output formats get about 4.5x speedup:

rgb24
  39980 UNITS in yuv2packed1,   32768 runs,      0 skips
   8774 UNITS in yuv2packed1,   32768 runs,      0 skips
bgr24
  40069 UNITS in yuv2packed1,   32768 runs,      0 skips
   8772 UNITS in yuv2packed1,   32766 runs,      2 skips
rgba
  39759 UNITS in yuv2packed1,   32768 runs,      0 skips
   8681 UNITS in yuv2packed1,   32767 runs,      1 skips
bgra
  39729 UNITS in yuv2packed1,   32768 runs,      0 skips
   8696 UNITS in yuv2packed1,   32766 runs,      2 skips
argb
  39766 UNITS in yuv2packed1,   32768 runs,      0 skips
   8672 UNITS in yuv2packed1,   32766 runs,      2 skips
bgra
  39784 UNITS in yuv2packed1,   32768 runs,      0 skips
   8659 UNITS in yuv2packed1,   32767 runs,      1 skips
2019-03-27 09:05:08 +02:00
compat additional math.h functions for djgpp 2018-11-28 22:16:07 +11:00
doc avfilter/vf_lensfun: add scale parameter 2019-03-25 22:50:54 +01:00
ffbuild Merge commit '7e5bde93a1e7641e1622814dafac0be3f413d79b' 2019-03-10 19:31:13 -03:00
fftools Merge commit '7e5bde93a1e7641e1622814dafac0be3f413d79b' 2019-03-10 19:31:13 -03:00
libavcodec lavc/h264_levels: add MaxMBPS checking and update fate test. 2019-03-27 00:13:27 +00:00
libavdevice lavd/v4l2: Fix the type of the probe function. 2019-03-23 23:42:09 +01:00
libavfilter avfilter/vf_lensfun: add scale parameter 2019-03-25 22:50:54 +01:00
libavformat avformat/avformat.h: Update the comment for AVInputFormat.flags 2019-03-26 20:58:19 +08:00
libavresample avresample: remove deprecated attribute from the AVAudioResampleContext struct 2018-01-09 10:56:53 -03:00
libavutil lavu/opencl: replace va_ext.h with standard name 2019-03-22 09:33:28 +08:00
libpostproc postproc/postprocess_template: remove FF_REG_sp from clobber list 2018-12-22 17:41:44 +01:00
libswresample Bump minor version for master after 4.1 branchpoint 2018-11-02 00:53:07 +01:00
libswscale swscale/ppc: VSX-optimize yuv2rgb_full 2019-03-27 09:05:08 +02:00
presets presets: remove moldering iPod presets 2014-06-17 16:15:04 -08:00
tests tests/fate-run: fix regression in encoding options 2019-03-19 01:08:16 -03:00
tools tools/target_dec_fate.list: add issues 4000 to 6000 2019-03-20 21:12:45 +01:00
.gitattributes fate: add SCC test 2017-01-27 17:06:42 +01:00
.gitignore Remove the ffserver program 2018-01-06 18:31:37 +00:00
.travis.yml Merge commit '899ee03088d55152a48830df0899887f055da1de' 2019-03-14 15:53:16 -03:00
Changelog lavd: Remove libndi_newtek 2019-03-20 10:42:10 +00:00
configure lavu/opencl: replace va_ext.h with standard name 2019-03-22 09:33:28 +08:00
CONTRIBUTING.md Add CONTRIBUTING.md 2016-09-18 10:02:13 +01:00
COPYING.GPLv2
COPYING.GPLv3 Add configure option to upgrade (L)GPL to version 3. 2009-06-05 11:04:03 +00:00
COPYING.LGPLv2.1 cosmetics: Delete empty lines at end of file. 2012-02-09 12:26:45 +01:00
COPYING.LGPLv3 Add configure option to upgrade (L)GPL to version 3. 2009-06-05 11:04:03 +00:00
CREDITS CREDITS: redirect to Git log, remove current outdated content 2013-01-31 18:02:52 +01:00
INSTALL.md INSTALL.md: Fix Markdown formatting 2019-01-31 10:29:16 -09:00
LICENSE.md Merge commit '4fef648d10bf3bcfd4b8fa5755c1128966a2427c' 2017-03-15 22:07:47 +01:00
MAINTAINERS MAINTAINERS: remove myself as mailing list maintainer 2019-03-21 11:34:13 -08:00
Makefile Merge commit '7e5bde93a1e7641e1622814dafac0be3f413d79b' 2019-03-10 19:31:13 -03:00
README.md Remove the ffserver program 2018-01-06 18:31:37 +00:00
RELEASE RELEASE: bump to 4.1.git 2018-11-02 00:55:49 +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 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.