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Michael Niedermayer 1e9c337e0f
avfilter/asrc_sinc: Use av_bessel_i0() 
The new function is much more precise
For default beta it is slightly slower, but its speed is already at the
worst case in that comparison
while the replaced function becomes much slower for larger beta

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2023-05-29 00:55:52 +02:00
compat compat: Use '-' instead of '/' for rc.exe options 2023-02-13 13:49:40 +02:00
doc Move bessel_i0() from swresample/resample to avutil/mathematics 2023-05-29 00:45:28 +02:00
ffbuild configure: probe RISC-V Vector extension 2022-09-27 13:19:52 +02:00
fftools fftools/sync_queue: make sure non-limiting streams are not used as queue head 2023-05-28 10:47:59 +02:00
libavcodec APIchanges: add AVHWAccel changes and bump lavc minor 2023-05-29 00:42:03 +02:00
libavdevice avdevice/opengl_enc: check sscanf return value 2023-05-22 20:08:55 +02:00
libavfilter avfilter/asrc_sinc: Use av_bessel_i0() 2023-05-29 00:55:52 +02:00
libavformat avformat/mov: creation time should be non negative 2023-05-29 00:43:39 +02:00
libavutil Move bessel_i0() from swresample/resample to avutil/mathematics 2023-05-29 00:45:28 +02:00
libpostproc version.h: Bump minor post 6.0 branch 2023-02-19 18:37:36 +01:00
libswresample Move bessel_i0() from swresample/resample to avutil/mathematics 2023-05-29 00:45:28 +02:00
libswscale swscale: bump minor for implementing support for the new pixfmts 2023-05-29 00:42:02 +02:00
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tests av1dec: add Vulkan hwaccel 2023-05-29 00:42:00 +02:00
tools tools/cl2c: change to tools/source2c and allow non-OpenCL source files 2023-05-29 00:42:00 +02:00
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.mailmap mailmap: stop git lying about who I commit things as 2022-11-04 19:37:46 +01:00
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Changelog changelog: add new Vulkan features 2023-05-29 00:42:03 +02:00
configure lavfi: add nlmeans_vulkan filter 2023-05-29 00:42:01 +02:00
CONTRIBUTING.md
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CREDITS Use https for repository links 2023-03-01 21:59:10 +01:00
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MAINTAINERS MAINTAINERS: add vanitous self to maintain RISC-V 2023-05-05 11:54:34 -03:00
Makefile tools: add an AV_CODEC_CAP_ENCODER_RECON_FRAME test tool 2023-03-28 13:00:42 +02:00
README.md
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.