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FFmpeg git repo
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Rémi Denis-Courmont 02594c8c01 lavc/pixblockdsp: rework R-V V get_pixels_unaligned 
As in the aligned case, we can use VLSE64.V, though the way of doing so
gets more convoluted, so the performance gains are more modest:

get_pixels_unaligned_c:       126.7
get_pixels_unaligned_rvv_i32: 145.5 (before)
get_pixels_unaligned_rvv_i64:  62.2 (after)

For the reference, those are the aligned benchmarks (unchanged) on the
same T-Head C908 hardware:

get_pixels_c:                 126.7
get_pixels_rvi:                85.7
get_pixels_rvv_i64:            33.2
2023-11-06 19:42:49 +02:00
compat configure: Set WIN32_LEAN_AND_MEAN at configure time 2023-08-14 22:57:28 +03:00
doc avfilter/af_adynamicequalizer: merge direction option with mode option 2023-11-04 15:39:24 +01:00
ffbuild ffbuild: Add gzip -n flag to fix reproducible builds 2023-11-05 11:30:13 +01:00
fftools fftools/ffmpeg_mux_init: Restrict disabling automatic copying of metadata 2023-11-02 13:24:21 +01:00
libavcodec lavc/pixblockdsp: rework R-V V get_pixels_unaligned 2023-11-06 19:42:49 +02:00
libavdevice Bump versions after 6.1 2023-10-29 16:19:14 +01:00
libavfilter avfilter/af_adynamicequalizer: do detection of threshold first 2023-11-05 16:00:29 +01:00
libavformat lavf/smacker: export sample_aspect_ratio 2023-11-05 11:30:13 +01:00
libavutil avutil/x86/pixelutils: Empty MMX state in ff_pixelutils_sad_8x8_mmxext 2023-11-04 01:26:03 +01:00
libpostproc Bump versions after 6.1 2023-10-29 16:19:14 +01:00
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libswscale Bump versions after 6.1 2023-10-29 16:19:14 +01:00
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tests lavf/smacker: export sample_aspect_ratio 2023-11-05 11:30:13 +01:00
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Changelog Changelog: mark 6.1 2023-10-29 12:55:37 -03:00
configure configure: warn when threading is disabled 2023-11-05 11:30:13 +01:00
CONTRIBUTING.md
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MAINTAINERS MAINTAINERS: add entry for jpegxl* 2023-10-17 08:44:23 -04:00
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README.md
RELEASE

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.