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J. Dekker 9bed814e1d lavc/aarch64: add hevc horizontal qpel/uni/bi 
checkasm --benchmark on Ampere Altra (Neoverse N1):

put_hevc_qpel_bi_h4_8_c: 170.7
put_hevc_qpel_bi_h4_8_neon: 64.5
put_hevc_qpel_bi_h6_8_c: 373.7
put_hevc_qpel_bi_h6_8_neon: 130.2
put_hevc_qpel_bi_h8_8_c: 662.0
put_hevc_qpel_bi_h8_8_neon: 138.5
put_hevc_qpel_bi_h12_8_c: 1529.5
put_hevc_qpel_bi_h12_8_neon: 422.0
put_hevc_qpel_bi_h16_8_c: 2735.5
put_hevc_qpel_bi_h16_8_neon: 560.5
put_hevc_qpel_bi_h24_8_c: 6015.7
put_hevc_qpel_bi_h24_8_neon: 1636.0
put_hevc_qpel_bi_h32_8_c: 10779.0
put_hevc_qpel_bi_h32_8_neon: 2204.5
put_hevc_qpel_bi_h48_8_c: 24375.0
put_hevc_qpel_bi_h48_8_neon: 4984.0
put_hevc_qpel_bi_h64_8_c: 42768.0
put_hevc_qpel_bi_h64_8_neon: 8795.7
put_hevc_qpel_h4_8_c: 149.0
put_hevc_qpel_h4_8_neon: 55.7
put_hevc_qpel_h6_8_c: 321.2
put_hevc_qpel_h6_8_neon: 106.0
put_hevc_qpel_h8_8_c: 578.7
put_hevc_qpel_h8_8_neon: 133.2
put_hevc_qpel_h12_8_c: 1279.0
put_hevc_qpel_h12_8_neon: 391.7
put_hevc_qpel_h16_8_c: 2286.2
put_hevc_qpel_h16_8_neon: 519.7
put_hevc_qpel_h24_8_c: 5100.7
put_hevc_qpel_h24_8_neon: 1546.2
put_hevc_qpel_h32_8_c: 9022.0
put_hevc_qpel_h32_8_neon: 2060.2
put_hevc_qpel_h48_8_c: 20293.5
put_hevc_qpel_h48_8_neon: 4656.7
put_hevc_qpel_h64_8_c: 36037.0
put_hevc_qpel_h64_8_neon: 8262.7
put_hevc_qpel_uni_h4_8_c: 162.2
put_hevc_qpel_uni_h4_8_neon: 61.7
put_hevc_qpel_uni_h6_8_c: 355.2
put_hevc_qpel_uni_h6_8_neon: 114.2
put_hevc_qpel_uni_h8_8_c: 651.0
put_hevc_qpel_uni_h8_8_neon: 135.7
put_hevc_qpel_uni_h12_8_c: 1412.5
put_hevc_qpel_uni_h12_8_neon: 402.7
put_hevc_qpel_uni_h16_8_c: 2551.0
put_hevc_qpel_uni_h16_8_neon: 533.5
put_hevc_qpel_uni_h24_8_c: 5782.2
put_hevc_qpel_uni_h24_8_neon: 1578.7
put_hevc_qpel_uni_h32_8_c: 10586.5
put_hevc_qpel_uni_h32_8_neon: 2102.2
put_hevc_qpel_uni_h48_8_c: 23812.0
put_hevc_qpel_uni_h48_8_neon: 4739.5
put_hevc_qpel_uni_h64_8_c: 42958.7
put_hevc_qpel_uni_h64_8_neon: 8366.5

Signed-off-by: J. Dekker <jdek@itanimul.li>
2022-10-25 14:56:38 +02:00
compat compat/cuda: switch from powf to __powf intrinsic 2022-09-03 20:27:34 +02:00
doc doc/encoders: Add doc for av1_qsv 2022-10-24 13:30:22 +08:00
ffbuild configure: probe RISC-V Vector extension 2022-09-27 13:19:52 +02:00
fftools fftools/ffmpeg_demux: stop modifying OptionsContext 2022-10-25 11:13:03 +02:00
libavcodec lavc/aarch64: add hevc horizontal qpel/uni/bi 2022-10-25 14:56:38 +02:00
libavdevice avdevice/avdevice: Fix mismatching argument name 2022-10-17 09:51:47 +02:00
libavfilter avfilter/vf_curves: add PCHIP interpolator and interp option 2022-10-22 19:35:44 +02:00
libavformat lavf: set internal thread names 2022-10-24 02:00:31 +02:00
libavutil avutil/integer: Use '|' instead of '+' where it is more natural 2022-10-24 20:11:20 +02:00
libpostproc configure: always enable gnu_windres if available 2022-08-13 14:42:36 +02:00
libswresample swresample: Fix Doxy reference to AVOptions 2022-10-17 09:55:19 +02:00
libswscale swscale: document some missing arguments 2022-10-17 09:56:47 +02:00
presets
tests ffmpeg: Add display_{rotation, hflip, vflip} options 2022-10-19 11:53:52 +02:00
tools tools/target_dec_fuzzer: Adjust threshold for FFV1 2022-10-20 21:42:21 +02:00
.gitattributes
.gitignore gitignore: add config_components.h 2022-03-17 18:35:41 -03:00
.mailmap mailmap: add entry for myself 2021-03-09 02:09:55 +00:00
.travis.yml
Changelog avcodec: ViewQuest VQC decoder 2022-10-18 13:20:37 +11:00
configure libavcodec/qsvenc_av1: add av1_qsv encoder 2022-10-24 13:30:22 +08:00
CONTRIBUTING.md
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS
INSTALL.md
LICENSE.md
MAINTAINERS MAINTAINERS: remove the project leader section 2022-09-23 16:06:11 +02:00
Makefile configure: probe RISC-V Vector extension 2022-09-27 13:19:52 +02:00
README.md README: fix typo and description of libavfilter 2021-10-08 09:44:34 +05:30
RELEASE RELEASE: update after 5.1 branch 2022-07-13 00:31:42 +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.