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FFmpeg git repo
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Swinney, Jonathan 0d7caa5b09 swscale/aarch64: add vscale specializations 
This commit adds new code paths for vscale when filterSize is 2, 4, or
8. By using specialized code with unrolling to match the filterSize we
can improve performance.

On AWS c7g (Graviton 3, Neoverse V1) instances:
                                 before   after
yuv2yuvX_2_0_512_accurate_neon:  558.8    268.9
yuv2yuvX_4_0_512_accurate_neon:  637.5    434.9
yuv2yuvX_8_0_512_accurate_neon:  1144.8   806.2
yuv2yuvX_16_0_512_accurate_neon: 2080.5   1853.7

Signed-off-by: Jonathan Swinney <jswinney@amazon.com>
Signed-off-by: Martin Storsjö <martin@martin.st>
 		2022-08-16 13:40:42 +03:00
compat compat: add msvc windres wrapper 2022-08-13 14:42:52 +02:00
doc doc/APIchanges: add missing rgbaf16 pixfmt entry 2022-08-16 12:31:03 +02:00
ffbuild ffbuild/common: Fix CPPFLAGS applied for compiling C++ files 2022-05-24 21:30:52 +02:00
fftools fftools/ffmpeg: store a separate copy of input codec parameters 2022-08-16 11:09:09 +02:00
libavcodec avcodec/mpegvideo: Don't zero unnecessarily 2022-08-15 18:19:19 +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 avformat/mov: fix encryption index in the case of multiple trun 2022-08-16 18:47:40 +08:00
libavutil lavu/tx: optimize and simplify inverse MDCTs 2022-08-16 01:22:38 +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/aarch64: add vscale specializations 2022-08-16 13:40:42 +03:00
presets
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tests checkasm: updated tests for sw_scale 2022-08-16 13:40:42 +03:00
tools tools/target_dec_fuzzer: set avctx->workaround_bugs flags 2022-07-26 09:15:16 -03:00
.gitattributes
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.gitignore gitignore: add config_components.h 2022-03-17 18:35:41 -03:00
.mailmap
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.travis.yml
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CONTRIBUTING.md
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COPYING.GPLv2
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COPYING.GPLv3
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COPYING.LGPLv2.1
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COPYING.LGPLv3
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CREDITS
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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
INSTALL.md
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LICENSE.md avfilter/vf_geq: Relicense to LGPL 2019-12-28 11:20:48 +01:00
MAINTAINERS MAINTAINERS: Add ED25519 key for signing my commits in the future 2022-08-09 21:57:31 +02:00
Makefile Makefile: Prompt for reconfigure on lavc/hwaccels.h modification 2022-07-01 00:34:38 +02:00
README.md
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RELEASE RELEASE: update after 5.1 branch 2022-07-13 00:31:42 +02:00
configure compat: add msvc windres wrapper 2022-08-13 14:42:52 +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.