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Anton Khirnov 9d44eb8af5 fftools/ffmpeg_filter: stop accessing encoder from pixfmt selection 
ffmpeg CLI pixel format selection for filtering currently special-cases
MJPEG encoding, where it will restrict the supported list of pixel
formats depending on the value of the -strict option. In order to get
that value it will apply it from the options dict into the encoder
context, which is a highly invasive action even now, and would become a
race once encoding is moved to its own thread.

The ugliness of this code can be much reduced by moving the special
handling of MJPEG into ofilter_bind_ost(), which is called from encoder
init and is thus synchronized with it. There is also no need to write
anything to the encoder context, we can evaluate the option into our
stack variable.

There is also no need to access AVCodec at all during pixel format
selection, as the pixel formats array is already stored in
OutputFilterPriv.
2023-07-20 20:30:13 +02:00
compat compat: Use '-' instead of '/' for rc.exe options 2023-02-13 13:49:40 +02:00
doc doc/filters: Extend description of overlay filter format option values 2023-07-20 16:49:38 +02:00
ffbuild configure: probe RISC-V Vector extension 2022-09-27 13:19:52 +02:00
fftools fftools/ffmpeg_filter: stop accessing encoder from pixfmt selection 2023-07-20 20:30:13 +02:00
libavcodec lavc/bswapdsp: purge RISC-V V bswap32 2023-07-19 19:29:35 +03:00
libavdevice lavd/opengl: select the GL context before drawing 2023-07-12 15:06:15 +02:00
libavfilter avfilter/vf_overlay: Add support for yuv444p10 pixel format 2023-07-20 16:49:05 +02:00
libavformat avisynth: pass audio channel layout 2023-07-19 19:33:20 -04:00
libavutil lavu: add/use flag for RISC-V Zba extension 2023-07-19 19:29:35 +03:00
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 lavu: add/use flag for RISC-V Zba extension 2023-07-19 19:29:35 +03:00
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tests tests/fate: fix mismatches between requested and actually used pixel formats 2023-07-20 20:30:13 +02:00
tools tools/target_bsf_fuzzer: fix some filter names 2023-06-29 22:44:11 -03:00
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Changelog avformat/rawenc: add H266/VVC muxer 2023-06-29 14:12:50 -03:00
configure configure: bump minimum AviSynth+ header version 2023-07-19 19:33:20 -04:00
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INSTALL.md
LICENSE.md avfilter/vf_geq: Relicense to LGPL 2019-12-28 11:20:48 +01:00
MAINTAINERS MAINTAINERS: change Leo Izen IRC nickname 2023-06-20 12:46:47 -04:00
Makefile tools: add an AV_CODEC_CAP_ENCODER_RECON_FRAME test tool 2023-03-28 13:00:42 +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

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.