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Wenbin Chen d165ce22a4 libavcodec/vaapi_encode: Add async_depth to vaapi_encoder to increase performance 
Fix: #7706. After commit 5fdcf85bbf, vaapi encoder's performance
decrease. The reason is that vaRenderPicture() and vaSyncBuffer() are
called at the same time (vaRenderPicture() always followed by a
vaSyncBuffer()). Now I changed them to be called in a asynchronous way,
which will make better use of hardware.
Async_depth is added to increase encoder's performance. The frames that
are sent to hardware are stored in a fifo. Encoder will sync output
after async fifo is full.

Signed-off-by: Wenbin Chen <wenbin.chen@intel.com>
Signed-off-by: Haihao Xiang <haihao.xiang@intel.com>
2022-02-28 12:37:02 +08:00
compat Replace all occurences of av_mallocz_array() by av_calloc() 2021-09-20 01:03:52 +02:00
doc libavcodec/vaapi_encode: Add async_depth to vaapi_encoder to increase performance 2022-02-28 12:37:02 +08:00
ffbuild Makefile: Redo duplicating object files in shared builds 2022-01-04 05:01:04 +01:00
fftools fftools/ffprobe: Remove redundant checks 2022-02-23 11:50:48 +01:00
libavcodec libavcodec/vaapi_encode: Add async_depth to vaapi_encoder to increase performance 2022-02-28 12:37:02 +08:00
libavdevice libavcodec, libavdevice: Remove unnecessary includes of version.h 2022-02-24 22:36:15 +02:00
libavfilter avfilter/vf_amplify: improve performance 2022-02-27 23:50:57 +01:00
libavformat configure: stop allowing disabling lzo 2022-02-26 14:22:07 -03:00
libavutil avutil: make lzo always compile 2022-02-26 14:17:00 -03:00
libpostproc lib*/version.h: Bump Versions after release/5.0 branch 2022-01-04 14:29:06 +01:00
libswresample lib*/version.h: Bump Versions after release/5.0 branch 2022-01-04 14:29:06 +01:00
libswscale swscale: Take the destination range into account for yuv->rgb->yuv conversions 2022-02-25 11:01:17 +02:00
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tests configure: stop allowing disabling lzo 2022-02-26 14:22:07 -03:00
tools tools/target_dem_fuzzer: Check fmt before dereferencing 2022-02-25 22:23:03 +01:00
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Changelog lavc/mpeg*: drop the XvMC hwaccel code 2022-02-15 10:16:15 +01:00
configure configure: stop allowing disabling lzo 2022-02-26 14:22:07 -03:00
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MAINTAINERS lavc/mpeg*: drop the XvMC hwaccel code 2022-02-15 10:16:15 +01:00
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README.md README: fix typo and description of libavfilter 2021-10-08 09:44:34 +05:30
RELEASE

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.