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Rémi Denis-Courmont 620e6e1487 arm: relax byte-swap assembler constraints
There are no particular reasons to force the compiler to use the same
register as output and input operand. This forces an extra MOV
instruction if the input value needs to be reused after the swap.

In most cases, this makes no differences, as the compiler will seleect
the same register for both operands either way.

Signed-off-by: Martin Storsjö <martin@martin.st>
2022-09-03 23:54:05 +03:00
compat compat/cuda: switch from powf to __powf intrinsic 2022-09-03 20:27:34 +02:00
doc avutil/file: Properly deprecate av_tempfile() 2022-09-03 15:42:40 +02:00
ffbuild ffbuild/common: Fix CPPFLAGS applied for compiling C++ files 2022-05-24 21:30:52 +02:00
fftools fftools/ffmpeg_opt: Check creation of new program 2022-09-01 14:26:01 +02:00
libavcodec avcodec/mathops: Set hidden visibility where advantageous 2022-09-03 22:37:33 +02:00
libavdevice avutil/internal: Move avpriv-file API to a header of its own 2022-09-03 15:41:44 +02:00
libavfilter avfilter/vf_bilateral_cuda: refactor use of pow to simple multiplication 2022-09-03 20:27:34 +02:00
libavformat avutil/internal: Move avpriv-file API to a header of its own 2022-09-03 15:41:44 +02:00
libavutil arm: relax byte-swap assembler constraints 2022-09-03 23:54:05 +03:00
libpostproc configure: always enable gnu_windres if available 2022-08-13 14:42:36 +02:00
libswresample lswr: take const AVChannelLayout* in swr_alloc_set_opts2() 2022-08-24 18:31:05 -05:00
libswscale libswscale: add support for VUYX format 2022-08-25 19:03:49 -07:00
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tests libswscale: add support for VUYX format 2022-08-25 19:03:49 -07:00
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Makefile Makefile: Prompt for reconfigure on lavc/hwaccels.h modification 2022-07-01 00:34:38 +02:00
README.md README: fix typo and description of libavfilter 2021-10-08 09:44:34 +05:30
RELEASE RELEASE: update after 5.1 branch 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.