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Andreas Rheinhardt 6c7a344b65 avcodec/vp3: Share coefficient VLCs between threads 
These VLCs are very big: The VP3 one have 164382 elements
but due to the overallocation enough memory for 313344 elements
are allocated (1.195 MiB with sizeof(VLCElem) == 4);
for VP4 the numbers are very similar, namely 311296 and 164392
elements. Since 1f4cf92cfb, each
frame thread has its own copy of these VLCs.

This commit fixes this by sharing these VLCs across threads.
The approach used here will also make it easier to support
stream reconfigurations in case of frame-multithreading
in the future.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2023-10-31 20:47:00 +01:00
compat configure: Set WIN32_LEAN_AND_MEAN at configure time 2023-08-14 22:57:28 +03:00
doc avutil/pixdesc: add AV_PIX_FMT_FLAG_XYZ 2023-10-31 15:46:07 +01:00
ffbuild configure: probe RISC-V Vector extension 2022-09-27 13:19:52 +02:00
fftools ffprobe: print the non-diegetic stream disposition flag 2023-10-25 21:55:01 -03:00
libavcodec avcodec/vp3: Share coefficient VLCs between threads 2023-10-31 20:47:00 +01:00
libavdevice Bump versions after 6.1 2023-10-29 16:19:14 +01:00
libavfilter avfilter/drawutils: remove redundant xyz format check 2023-10-31 15:46:38 +01:00
libavformat avformat/vf_vapoursynth: simplify xyz format check 2023-10-31 15:46:38 +01:00
libavutil avutil/pixdesc: simplify xyz pixfmt check 2023-10-31 15:46:38 +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 Bump versions after 6.1 2023-10-29 16:19:14 +01:00
presets
tests avfilter/drawutils: ban XYZ formats 2023-10-31 15:43:30 +01:00
tools tools/target_dec_fuzzer: Adjust wmapro threshold 2023-10-03 20:09:27 +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
.travis.yml
Changelog Changelog: mark 6.1 2023-10-29 12:55:37 -03:00
configure configure: Improve aarch64 feature detection on older, broken Clang versions 2023-10-31 12:23:31 +02:00
CONTRIBUTING.md
COPYING.GPLv2
COPYING.GPLv3
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CREDITS Use https for repository links 2023-03-01 21:59:10 +01:00
INSTALL.md
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MAINTAINERS MAINTAINERS: add entry for jpegxl* 2023-10-17 08:44:23 -04:00
Makefile tools: Don't include the direct library names when linking 2023-10-02 22:49:07 +03:00
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.