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Andreas Rheinhardt caa0ae0cfb avcodec/x86/vvc/mc: Avoid pextr[dq], v{insert,extract}i128 Use mov[dq], movdqu instead if the least significant parts are set (i.e. if the immediate value is 0x0). Old benchmarks: avg_8_2x2_c: 11.3 ( 1.00x) avg_8_2x2_avx2: 7.5 ( 1.50x) avg_8_4x4_c: 31.2 ( 1.00x) avg_8_4x4_avx2: 10.7 ( 2.91x) avg_8_8x8_c: 133.5 ( 1.00x) avg_8_8x8_avx2: 21.2 ( 6.30x) avg_8_16x16_c: 254.7 ( 1.00x) avg_8_16x16_avx2: 30.1 ( 8.46x) avg_8_32x32_c: 896.9 ( 1.00x) avg_8_32x32_avx2: 103.9 ( 8.63x) avg_8_64x64_c: 3320.7 ( 1.00x) avg_8_64x64_avx2: 539.4 ( 6.16x) avg_8_128x128_c: 12991.5 ( 1.00x) avg_8_128x128_avx2: 1661.3 ( 7.82x) avg_10_2x2_c: 21.3 ( 1.00x) avg_10_2x2_avx2: 8.3 ( 2.55x) avg_10_4x4_c: 34.9 ( 1.00x) avg_10_4x4_avx2: 10.6 ( 3.28x) avg_10_8x8_c: 76.3 ( 1.00x) avg_10_8x8_avx2: 20.2 ( 3.77x) avg_10_16x16_c: 255.9 ( 1.00x) avg_10_16x16_avx2: 24.1 (10.60x) avg_10_32x32_c: 932.4 ( 1.00x) avg_10_32x32_avx2: 73.3 (12.72x) avg_10_64x64_c: 3516.4 ( 1.00x) avg_10_64x64_avx2: 601.7 ( 5.84x) avg_10_128x128_c: 13690.6 ( 1.00x) avg_10_128x128_avx2: 1613.2 ( 8.49x) avg_12_2x2_c: 14.0 ( 1.00x) avg_12_2x2_avx2: 8.3 ( 1.67x) avg_12_4x4_c: 35.3 ( 1.00x) avg_12_4x4_avx2: 10.9 ( 3.26x) avg_12_8x8_c: 76.5 ( 1.00x) avg_12_8x8_avx2: 20.3 ( 3.77x) avg_12_16x16_c: 256.7 ( 1.00x) avg_12_16x16_avx2: 24.1 (10.63x) avg_12_32x32_c: 932.5 ( 1.00x) avg_12_32x32_avx2: 73.3 (12.72x) avg_12_64x64_c: 3520.5 ( 1.00x) avg_12_64x64_avx2: 602.6 ( 5.84x) avg_12_128x128_c: 13689.6 ( 1.00x) avg_12_128x128_avx2: 1613.1 ( 8.49x) w_avg_8_2x2_c: 16.7 ( 1.00x) w_avg_8_2x2_avx2: 13.4 ( 1.25x) w_avg_8_4x4_c: 44.5 ( 1.00x) w_avg_8_4x4_avx2: 15.9 ( 2.81x) w_avg_8_8x8_c: 166.1 ( 1.00x) w_avg_8_8x8_avx2: 45.7 ( 3.63x) w_avg_8_16x16_c: 392.9 ( 1.00x) w_avg_8_16x16_avx2: 57.8 ( 6.80x) w_avg_8_32x32_c: 1455.5 ( 1.00x) w_avg_8_32x32_avx2: 215.0 ( 6.77x) w_avg_8_64x64_c: 5621.8 ( 1.00x) w_avg_8_64x64_avx2: 875.2 ( 6.42x) w_avg_8_128x128_c: 22131.3 ( 1.00x) w_avg_8_128x128_avx2: 3390.1 ( 6.53x) w_avg_10_2x2_c: 18.0 ( 1.00x) w_avg_10_2x2_avx2: 14.0 ( 1.28x) w_avg_10_4x4_c: 53.9 ( 1.00x) w_avg_10_4x4_avx2: 15.9 ( 3.40x) w_avg_10_8x8_c: 109.5 ( 1.00x) w_avg_10_8x8_avx2: 40.4 ( 2.71x) w_avg_10_16x16_c: 395.7 ( 1.00x) w_avg_10_16x16_avx2: 44.7 ( 8.86x) w_avg_10_32x32_c: 1532.7 ( 1.00x) w_avg_10_32x32_avx2: 142.4 (10.77x) w_avg_10_64x64_c: 6007.7 ( 1.00x) w_avg_10_64x64_avx2: 745.5 ( 8.06x) w_avg_10_128x128_c: 23719.7 ( 1.00x) w_avg_10_128x128_avx2: 2217.7 (10.70x) w_avg_12_2x2_c: 18.9 ( 1.00x) w_avg_12_2x2_avx2: 13.6 ( 1.38x) w_avg_12_4x4_c: 47.5 ( 1.00x) w_avg_12_4x4_avx2: 15.9 ( 2.99x) w_avg_12_8x8_c: 109.3 ( 1.00x) w_avg_12_8x8_avx2: 40.9 ( 2.67x) w_avg_12_16x16_c: 395.6 ( 1.00x) w_avg_12_16x16_avx2: 44.8 ( 8.84x) w_avg_12_32x32_c: 1531.0 ( 1.00x) w_avg_12_32x32_avx2: 141.8 (10.80x) w_avg_12_64x64_c: 6016.7 ( 1.00x) w_avg_12_64x64_avx2: 732.8 ( 8.21x) w_avg_12_128x128_c: 23762.2 ( 1.00x) w_avg_12_128x128_avx2: 2223.4 (10.69x) New benchmarks: avg_8_2x2_c: 11.3 ( 1.00x) avg_8_2x2_avx2: 7.6 ( 1.49x) avg_8_4x4_c: 31.2 ( 1.00x) avg_8_4x4_avx2: 10.8 ( 2.89x) avg_8_8x8_c: 131.6 ( 1.00x) avg_8_8x8_avx2: 15.6 ( 8.42x) avg_8_16x16_c: 255.3 ( 1.00x) avg_8_16x16_avx2: 27.9 ( 9.16x) avg_8_32x32_c: 897.9 ( 1.00x) avg_8_32x32_avx2: 81.2 (11.06x) avg_8_64x64_c: 3320.0 ( 1.00x) avg_8_64x64_avx2: 335.1 ( 9.91x) avg_8_128x128_c: 12999.1 ( 1.00x) avg_8_128x128_avx2: 1456.3 ( 8.93x) avg_10_2x2_c: 12.0 ( 1.00x) avg_10_2x2_avx2: 8.6 ( 1.40x) avg_10_4x4_c: 34.9 ( 1.00x) avg_10_4x4_avx2: 9.7 ( 3.61x) avg_10_8x8_c: 76.7 ( 1.00x) avg_10_8x8_avx2: 16.3 ( 4.69x) avg_10_16x16_c: 256.3 ( 1.00x) avg_10_16x16_avx2: 25.2 (10.18x) avg_10_32x32_c: 932.8 ( 1.00x) avg_10_32x32_avx2: 73.3 (12.72x) avg_10_64x64_c: 3518.8 ( 1.00x) avg_10_64x64_avx2: 416.8 ( 8.44x) avg_10_128x128_c: 13691.6 ( 1.00x) avg_10_128x128_avx2: 1612.9 ( 8.49x) avg_12_2x2_c: 14.1 ( 1.00x) avg_12_2x2_avx2: 8.7 ( 1.62x) avg_12_4x4_c: 35.7 ( 1.00x) avg_12_4x4_avx2: 9.7 ( 3.68x) avg_12_8x8_c: 77.0 ( 1.00x) avg_12_8x8_avx2: 16.9 ( 4.57x) avg_12_16x16_c: 256.2 ( 1.00x) avg_12_16x16_avx2: 25.7 ( 9.96x) avg_12_32x32_c: 933.5 ( 1.00x) avg_12_32x32_avx2: 74.0 (12.62x) avg_12_64x64_c: 3516.4 ( 1.00x) avg_12_64x64_avx2: 408.7 ( 8.60x) avg_12_128x128_c: 13691.6 ( 1.00x) avg_12_128x128_avx2: 1613.8 ( 8.48x) w_avg_8_2x2_c: 16.7 ( 1.00x) w_avg_8_2x2_avx2: 14.0 ( 1.19x) w_avg_8_4x4_c: 48.2 ( 1.00x) w_avg_8_4x4_avx2: 16.1 ( 3.00x) w_avg_8_8x8_c: 168.0 ( 1.00x) w_avg_8_8x8_avx2: 22.5 ( 7.47x) w_avg_8_16x16_c: 392.5 ( 1.00x) w_avg_8_16x16_avx2: 47.9 ( 8.19x) w_avg_8_32x32_c: 1453.7 ( 1.00x) w_avg_8_32x32_avx2: 176.1 ( 8.26x) w_avg_8_64x64_c: 5631.4 ( 1.00x) w_avg_8_64x64_avx2: 690.8 ( 8.15x) w_avg_8_128x128_c: 22139.5 ( 1.00x) w_avg_8_128x128_avx2: 2742.4 ( 8.07x) w_avg_10_2x2_c: 18.1 ( 1.00x) w_avg_10_2x2_avx2: 13.8 ( 1.31x) w_avg_10_4x4_c: 47.0 ( 1.00x) w_avg_10_4x4_avx2: 16.4 ( 2.87x) w_avg_10_8x8_c: 110.0 ( 1.00x) w_avg_10_8x8_avx2: 21.6 ( 5.09x) w_avg_10_16x16_c: 395.2 ( 1.00x) w_avg_10_16x16_avx2: 45.4 ( 8.71x) w_avg_10_32x32_c: 1533.8 ( 1.00x) w_avg_10_32x32_avx2: 142.6 (10.76x) w_avg_10_64x64_c: 6004.4 ( 1.00x) w_avg_10_64x64_avx2: 672.8 ( 8.92x) w_avg_10_128x128_c: 23748.5 ( 1.00x) w_avg_10_128x128_avx2: 2198.0 (10.80x) w_avg_12_2x2_c: 17.2 ( 1.00x) w_avg_12_2x2_avx2: 13.9 ( 1.24x) w_avg_12_4x4_c: 51.4 ( 1.00x) w_avg_12_4x4_avx2: 16.5 ( 3.11x) w_avg_12_8x8_c: 109.1 ( 1.00x) w_avg_12_8x8_avx2: 22.0 ( 4.96x) w_avg_12_16x16_c: 395.9 ( 1.00x) w_avg_12_16x16_avx2: 44.9 ( 8.81x) w_avg_12_32x32_c: 1533.5 ( 1.00x) w_avg_12_32x32_avx2: 142.3 (10.78x) w_avg_12_64x64_c: 6002.0 ( 1.00x) w_avg_12_64x64_avx2: 557.5 (10.77x) w_avg_12_128x128_c: 23749.5 ( 1.00x) w_avg_12_128x128_avx2: 2202.0 (10.79x) Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>		2026-02-22 00:57:56 +01:00
.forgejo	.forgejo/workflows: Test hardcoded tables	2026-02-14 20:15:13 +01:00
compat	compat: Fix .def file generation for ARM64EC builds on Windows	2025-12-19 10:01:16 +00:00
doc	avformat: Bump version and add APIChanges entry	2026-02-21 20:03:52 +01:00
ffbuild	vulkan: support shader compression	2026-01-12 17:28:41 +01:00
fftools	fftools/ffmpeg_opt: limit recursion of presets	2026-02-17 13:41:37 +00:00
libavcodec	avcodec/x86/vvc/mc: Avoid pextr[dq], v{insert,extract}i128	2026-02-22 00:57:56 +01:00
libavdevice	avdevice/gdigrab: suppress int to pointer cast warning	2025-12-03 23:45:44 +00:00
libavfilter	avfilter/af_loudnorm: Avoid unchecked allocation	2026-02-20 20:35:16 +01:00
libavformat	avformat/hlsenc: Return error upon error, fix shadowing	2026-02-22 00:23:00 +01:00
libavutil	avutil/attributes_internal: Add attribute_nonstring	2026-02-20 11:59:37 +01:00
libswresample	swresample: Check ch layouts in swr_alloc_set_opts2()	2026-02-15 20:16:12 +01:00
libswscale	swscale/ops_optimizer: add sanity checks to scale->expand conversion	2026-02-21 11:47:43 +00:00
presets
tests	avcodec/jpeglsdec: fix decoding of jpegls files with restart markers	2026-02-20 16:32:10 +01:00
tools	tools/target_dec_fuzzer: Adjust threshold for JV	2026-02-18 08:18:44 +00:00
.gitattributes	gitattributes: End merge conflicts in Changelog	2025-03-17 15:26:10 +01:00
.gitignore	vulkan: support shader compression	2026-01-12 17:28:41 +01:00
.mailmap	mailmap: add entry for myself	2025-08-08 21:51:15 +00:00
Changelog	avfilter: d3d12 motion estimation filter support	2026-01-26 11:31:48 +00:00
configure	configure: Enable -Wunterminated-string-initialization warning	2026-02-20 11:59:37 +01:00
CONTRIBUTING.md	Add CONTRIBUTING.md	2016-09-18 10:02:13 +01:00
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1	all: fix whitespace/new-line issues	2025-08-03 13:48:47 +02:00
COPYING.LGPLv3
CREDITS	Use https for repository links	2023-03-01 21:59:10 +01:00
FUNDING.json	Add FUNDING.json	2025-06-23 14:48:40 +02:00
INSTALL.md	all: fix typos found by codespell	2025-08-03 13:48:47 +02:00
LICENSE.md	Remove libpostproc	2025-05-07 15:35:47 +02:00
MAINTAINERS	MAINTAINERS: add myself as whip maintainer	2026-01-11 04:24:55 +00:00
Makefile	Makefile: add missing vpath for glsl/spv	2026-01-12 19:18:36 +01:00
README.md	README: fix typo and description of libavfilter	2021-10-08 09:44:34 +05:30
RELEASE	RELEASE: update to 8.0	2025-08-14 08:42:29 -04:00

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.