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mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-01-19 05:49:09 +02:00
Michael Niedermayer 278fea3664
avutil/eval: Use even better PRNG
This is the 64bit version of Chris Doty-Humphreys SFC64

Compared to the LCGs these produce much better quality numbers.
Compared to LFGs this needs less state. (our LFG has 224 byte
state for its 32bit version) this has 32byte state
Also the initialization for our LFG is slower.
This is also much faster than KISS or PCG.

This commit replaces the broken LCG used before.
(broken as it had only a period ~200M due to being put in a double)

This changes the output from random() which is why libswresample.mak
is updated, update was done using the command in libswresample.mak

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-01-16 01:34:57 +01:00
2024-01-16 01:07:51 +01:00
2023-12-08 17:21:09 +02:00
2023-10-29 16:19:14 +01:00
2024-01-16 01:34:57 +01:00
2022-03-17 18:35:41 -03:00
2023-11-03 20:57:49 +08:00
2024-01-12 10:38:15 +08:00
2023-03-01 21:59:10 +01:00
2019-01-31 10:29:16 -09:00
2019-12-28 11:20:48 +01:00
2024-01-10 23:07:28 -05:00
2022-07-13 00:31:42 +02:00

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.

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Other 0.1%