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FFmpeg git repo
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Rémi Denis-Courmont 6d60cc7baf sws/rgb2rgb: fix unaligned accesses in R-V V YUYV to I422p 
In my personal opinion, we should not need to support unaligned YUY2
pixel maps. They should always be aligned to at least 32 bits, and the
current code assumes just 16 bits. However checkasm does test for
unaligned input bitmaps. QEMU accepts it, but real hardware dose not.

In this particular case, we can at the same time improve performance and
handle unaligned inputs, so do just that.

uyvytoyuv422_c:      104379.0
uyvytoyuv422_c:      104060.0
uyvytoyuv422_rvv_i32: 25284.0 (before)
uyvytoyuv422_rvv_i32: 19303.2 (after)
 		2023-11-13 18:34:29 +02:00
compat configure: Set WIN32_LEAN_AND_MEAN at configure time 2023-08-14 22:57:28 +03:00
doc avfilter/avf_showcwt: add fm frequency scaler 2023-11-11 01:19:44 +01:00
ffbuild ffbuild: Add gzip -n flag to fix reproducible builds 2023-11-05 11:30:13 +01:00
fftools fftools/ffmpeg_filter: return an error on ofilter_alloc() failure 2023-11-09 11:25:17 +01:00
libavcodec lavc/sbrdsp: R-V V hf_gen 2023-11-13 18:33:02 +02:00
libavdevice avdevice/android_camera: fix build failure due to typo 2023-11-07 11:10:07 +08:00
libavfilter avfilter/buffersrc: switch to activate 2023-11-12 23:48:10 +01:00
libavformat avformat/hlsenc: Fix name of flag in error message 2023-11-12 16:47:40 +08:00
libavutil lavu/log: do not assume AVClass.item_name is always set 2023-11-09 11:25:17 +01:00
libpostproc Bump versions after 6.1 2023-10-29 16:19:14 +01:00
libswresample Bump versions after 6.1 2023-10-29 16:19:14 +01:00
libswscale sws/rgb2rgb: fix unaligned accesses in R-V V YUYV to I422p 2023-11-13 18:34:29 +02:00
presets
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tests checkasm: test with random bw value 2023-11-12 22:33:11 +02:00
tools tools/target_dec_fuzzer: Adjust threshold for CSCD 2023-11-01 16:40:21 +01:00
.gitattributes
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.gitignore
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.mailmap mailmap: remap my email accounts 2023-11-03 20:57:49 +08:00
.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 avcodec: LEAD MCMP decoder 2023-11-08 17:37:58 +11:00
INSTALL.md
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LICENSE.md
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MAINTAINERS MAINTAINERS: add myself as a mediacodec and videotoolbox maintainer 2023-11-08 16:15:04 +08:00
Makefile tools: Don't include the direct library names when linking 2023-10-02 22:49:07 +03:00
README.md
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RELEASE
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configure avcodec: LEAD MCMP decoder 2023-11-08 17:37:58 +11:00

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.