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Martin Storsjö b252178321 libavcodec: arm: Add a NEON implementation of pixblockdsp 
Cortex A7     A8     A9    A53   A72
get_pixels_c:                144.7  146.0  143.0  137.7   69.0
get_pixels_armv6:            112.0  106.7   90.2   95.0   72.5
get_pixels_neon:              69.0   29.7   68.7   40.2   19.0
get_pixels_unaligned_c:      144.7  146.2  143.0  137.7   69.0
get_pixels_unaligned_neon:    77.0   36.5   72.5   48.5   19.0
diff_pixels_c:               376.7  319.7  265.5  307.7  148.0
diff_pixels_armv6:           179.0  159.5  205.5  139.0  142.0
diff_pixels_neon:             69.0   40.2   77.5   53.2   26.0
diff_pixels_unaligned_c:     376.7  319.7  265.5  307.7  148.0
diff_pixels_unaligned_neon:   85.0   54.5   93.5   66.7   26.0

Signed-off-by: Martin Storsjö <martin@martin.st>
2020-05-15 23:37:43 +03:00
compat compat/avisynth: remove avisynth headers 2020-04-05 01:17:55 +02:00
doc avfilter/vf_minterpolate: change the default threshold to get better scene change detect result 2020-05-14 23:03:07 +08:00
ffbuild common.mak: Also clean Windows debug files. 2020-03-21 18:46:00 +01:00
fftools fftools/ffmpeg: use local variable with same contents directly 2020-05-06 23:02:00 +08:00
libavcodec libavcodec: arm: Add a NEON implementation of pixblockdsp 2020-05-15 23:37:43 +03:00
libavdevice avdevice/v4l2enc: Allow writing non-rawvideos to v4l2. 2020-05-09 15:44:43 +01:00
libavfilter Revert "avfilter/vf_framerate: if metadata lavfi.scd.mafd exists, we'll use it first" 2020-05-15 18:35:51 +02:00
libavformat avformat/mov: Read the QT Metadata Keys only once 2020-05-15 22:03:36 +02:00
libavresample avresample: remove deprecated attribute from the AVAudioResampleContext struct 2018-01-09 10:56:53 -03:00
libavutil avutil/common: Add saturated add/sub operations for int64_t. 2020-05-15 22:03:36 +02:00
libpostproc libavcodec, libpostproc: Remove outcommented START/STOP_TIMER 2020-03-14 18:24:04 +01:00
libswresample Silence "string-plus-int" warning shown by clang. 2020-01-06 22:38:56 +01:00
libswscale swscale: arm: fix NEON hscale init 2020-05-15 23:33:46 +03:00
presets
tests checkasm: pixblockdsp: Add tests for get_pixels_unaligned and diff_pixels_unaligned 2020-05-15 23:37:27 +03:00
tools tools/target_dec_fuzzer: Adjust threshold for PNG and APNG 2020-05-10 01:09:13 +02:00
.gitattributes fate: add SCC test 2017-01-27 17:06:42 +01:00
.gitignore tools/python: add script to convert TensorFlow model (.pb) to native model (.model) 2019-07-01 10:23:47 -03:00
.mailmap mailmap: fix 3-address entries 2020-03-31 04:14:14 -05:00
.travis.yml Merge commit '899ee03088' 2019-03-14 15:53:16 -03:00
Changelog avfilter/vf_scdet: add filter to detect scene change 2020-05-14 23:03:06 +08:00
configure avfilter/vf_scdet: add filter to detect scene change 2020-05-14 23:03:06 +08:00
CONTRIBUTING.md Add CONTRIBUTING.md 2016-09-18 10:02:13 +01:00
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS
INSTALL.md INSTALL.md: Fix Markdown formatting 2019-01-31 10:29:16 -09:00
LICENSE.md avfilter/vf_geq: Relicense to LGPL 2019-12-28 11:20:48 +01:00
MAINTAINERS MAINTAINERS: Add myself to libopenh264enc 2020-05-06 19:12:00 +02:00
Makefile Makefile: Delete more created files when running "make distclean". 2020-03-11 11:43:01 +01:00
README.md Remove the ffserver program 2018-01-06 18:31:37 +00:00
RELEASE RELEASE: Update value for post 4.2 branch 2019-07-21 18:37:32 +02:00

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.