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Niklas Haas e44a1aaeec avfilter/x86/scene_sad: add high bit depth AVX2/AVX512 version 
Since psadbw only exists for 8-bits, we have to emulate it for 16-bit
inputs. The simplest sequence is to use a normal subtraction, which is safe
as long as the inputs do not exceed 32767 - so limit this implementation
to 15-bit inputs and below.

For 16-bit inputs, we could in theory instead use a pminw / pmaxw to ensure
the resulting difference does not overflow, but this is slower, and also
breaks the subsequent use of pmaddwd, so I opted to skip 16-bit SIMD for
now.

scene_sad10_c:                                      114175.6 ( 1.00x)
scene_sad10_avx2:                                     9617.7 (11.87x)
scene_sad10_avx512:                                   5208.8 (21.92x)
scene_sad12_c:                                      114537.8 ( 1.00x)
scene_sad12_avx2:                                     9614.0 (11.91x)
scene_sad12_avx512:                                   5186.3 (22.08x)
scene_sad14_c:                                      114113.9 ( 1.00x)
scene_sad14_avx2:                                     9612.9 (11.87x)
scene_sad14_avx512:                                   5186.0 (22.00x)
scene_sad15_c:                                      114108.9 ( 1.00x)
scene_sad15_avx2:                                     9612.3 (11.87x)
scene_sad15_avx512:                                   5186.4 (22.00x)
scene_sad16_c:                                      114136.0 ( 1.00x)
2025-07-17 12:26:06 +02:00
compat compat/cuda: add device side printf function 2025-05-14 22:08:33 +02:00
doc fftools/ffmpeg: add support for setting maximum buffered frames in a filtergraph 2025-07-14 22:05:11 +02:00
ffbuild ffbuild: correctly silence and tag new css/html steps 2025-05-28 01:02:55 +02:00
fftools fftools/ffmpeg: add support for setting maximum buffered frames in a filtergraph 2025-07-14 22:05:11 +02:00
libavcodec avcodec/ffv1dec: don't add offsets to NULL pointers 2025-07-15 10:24:09 -03:00
libavdevice various: fix typos 2025-06-15 21:00:38 +05:30
libavfilter avfilter/x86/scene_sad: add high bit depth AVX2/AVX512 version 2025-07-17 12:26:06 +02:00
libavformat avformat/tls_openssl: remove all redundant "TLS: " in log with AVClass 2025-07-17 02:35:11 +02:00
libavutil avutil/hwcontext_vulkan: don't over-map buffers with prior padding 2025-07-15 12:46:11 +02:00
libswresample swresample/rematrix: Constify 2025-07-03 18:17:56 +02:00
libswscale swscale: add support for new 10/12 bit MSB formats 2025-07-11 17:49:58 +02:00
presets
tests tests/checkasm: add scene_sad checkasm test 2025-07-17 12:26:05 +02:00
tools tools/pktdumper: dump extradata buffers 2025-07-01 16:45:08 +10:00
.gitattributes gitattributes: End merge conflicts in Changelog 2025-03-17 15:26:10 +01:00
.gitignore ffmpeg/repo: Add dot-folders in the repository root to .gitignore 2025-04-19 17:29:12 +02:00
.mailmap mailmap: add entry for myself 2024-07-15 01:59:37 +02:00
Changelog Changelog: mention dropping OpenSSL < 1.1.0 2025-07-07 20:53:54 +02:00
configure configure: add -Wl when linker is called indirectly 2025-07-17 00:28:21 +02:00
CONTRIBUTING.md
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
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 Add tools/merge-all-source-plugins 2025-05-15 12:17:04 +02:00
LICENSE.md Remove libpostproc 2025-05-07 15:35:47 +02:00
MAINTAINERS MAINTAINERS: add myself 2025-07-15 00:59:46 +02:00
Makefile Makefile: Split ALLFFLIBS 2025-05-26 20:33:10 +02:00
README.md README: fix typo and description of libavfilter 2021-10-08 09:44:34 +05:30
RELEASE RELEASE: update release number after release/7.1 branch 2024-10-09 01:55:50 +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.