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Hubert Mazur 06b98e396a lavc/aarch64: Provide neon implementation of nsse16 
Add vectorized implementation of nsse16 function.

Performance comparison tests are shown below.
- nsse_0_c: 682.2
- nsse_0_neon: 116.5

Benchmarks and tests run with checkasm tool on AWS Graviton 3.

Co-authored-by: Martin Storsjö <martin@martin.st>
Signed-off-by: Hubert Mazur <hum@semihalf.com>
Signed-off-by: Martin Storsjö <martin@martin.st>
 		2022-09-09 10:19:46 +03:00
compat compat/cuda: switch from powf to __powf intrinsic 2022-09-03 20:27:34 +02:00
doc libavcodec/qsvenc: Add low_delay_brc reset support to qsvenc 2022-09-09 09:39:44 +08:00
ffbuild
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fftools fftools/ffprobe: Report initial and trailing padding 2022-09-05 20:32:12 +02:00
libavcodec lavc/aarch64: Provide neon implementation of nsse16 2022-09-09 10:19:46 +03:00
libavdevice avutil/internal: Move avpriv-file API to a header of its own 2022-09-03 15:41:44 +02:00
libavfilter avfilter/vf_showinfo: remove backspaces 2022-09-08 21:29:41 +02:00
libavformat avformat/mov: don't read duration from mvhd atom 2022-09-08 20:06:06 -03:00
libavutil lavu/hwcontext_qsv: add support for AV_PIX_FMT_VUYX on Linux 2022-09-07 14:04:12 +08:00
libpostproc
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libswresample lswr: take const AVChannelLayout* in swr_alloc_set_opts2() 2022-08-24 18:31:05 -05:00
libswscale swscale/input: Remove spec-incompliant ';' 2022-09-08 19:21:30 +02:00
presets
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tests avformat/mov: don't read duration from mvhd atom 2022-09-08 20:06:06 -03:00
tools tools/.gitignore: Add missing tools 2022-09-06 03:29:28 +02:00
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Changelog lavc/vaapi: Add support for remaining 10/12bit profiles 2022-09-03 16:19:40 -07:00
INSTALL.md
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configure lavf/dv: always provide avpriv_dv_* symbols 2022-09-05 08:01:17 +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 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.