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Lynne 6025e66f98
hwcontext_vulkan: use the maximum amount of queues for each family 
Due to our AVHWDevice infrastructure, where API users are offered a way
to derive contexts rather than always create new one, our filterchains,
being supported by a single hardware device context, can grow to considerable
size.
Hence, in such situations, using the maximum amount of queues the device offers
can be benefitial to eliminating bottlenecks where queue submissions on the
same family have to wait for the previous one to finish.
 		2020-05-12 21:32:30 +01:00
compat compat/avisynth: remove avisynth headers 2020-04-05 01:17:55 +02:00
doc lavc: add a flag for exporting AVVideoEncParams from decoders 2020-05-12 09:37:47 +02:00
ffbuild common.mak: Also clean Windows debug files. 2020-03-21 18:46:00 +01:00
fftools fftools/ffmpeg: use local variable with same contents directly 2020-05-06 23:02:00 +08:00
libavcodec avcodec/ralf: Check num_blocks before use 2020-05-12 21:39:13 +02:00
libavdevice avdevice/v4l2enc: Allow writing non-rawvideos to v4l2. 2020-05-09 15:44:43 +01:00
libavfilter vf_showinfo: support AV_FRAME_DATA_VIDEO_ENC_PARAMS 2020-05-12 09:37:47 +02:00
libavformat avformat/hlsenc: free options fix memleak in hls_write_trailer 2020-05-12 22:32:08 +08:00
libavresample
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libavutil hwcontext_vulkan: use the maximum amount of queues for each family 2020-05-12 21:32:30 +01:00
libpostproc libavcodec, libpostproc: Remove outcommented START/STOP_TIMER 2020-03-14 18:24:04 +01:00
libswresample Silence "string-plus-int" warning shown by clang. 2020-01-06 22:38:56 +01:00
libswscale libswscale: fix for floating point formats, require full chroma 2020-05-12 01:00:28 +02:00
presets
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CONTRIBUTING.md
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Changelog avcodec/pcm_rechunk_bsf: add bitstream filter to rechunk pcm audio 2020-05-07 23:12:24 +02:00
INSTALL.md
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LICENSE.md avfilter/vf_geq: Relicense to LGPL 2019-12-28 11:20:48 +01:00
MAINTAINERS MAINTAINERS: Add myself to libopenh264enc 2020-05-06 19:12:00 +02:00
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README.md
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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 a mean to alter decoded Audio and Video through chain of 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.