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8d3666c425
Add common filters of the qsv vpp features including scale,denosie, deinterlace,frc,crop and procAmp. Performance will be significantly reduced in the test if using cascade mode just like qsv framerate + qsv scale + qsv deinterlace + qsv denoise in separated way no matter in system or video memmory cases. And the code is so redundant because so much the same just as session and surface's creation and management. So we add a common qsv filter. Usage: -hwaccel qsv -c:v h264_qsv -r 25 -i in -vf vpp_qsv=w=iw/2:h=400:deinterlace=1:framerate=60:detail=50:denoise=50 -b 2M -maxrate 3M -c:v h264_qsv -y out.h264 Signed-off-by: ChaoX A Liu <chaox.a.liu@gmail.com> Signed-off-by: Zhengxu Huang <zhengxu.maxwell@gmail.com> Signed-off-by: Andrew Zhang <huazh407@gmail.com> Change-Id: I130392ce722138c209ab658c5f03f0009b6e8024 Signed-off-by: Maxym Dmytrychenko <maxim.d33@gmail.com>
Libav
Libav is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.
Libraries
libavcodecprovides implementation of a wider range of codecs.libavformatimplements streaming protocols, container formats and basic I/O access.libavutilincludes hashers, decompressors and miscellaneous utility functions.libavfilterprovides a mean to alter decoded Audio and Video through chain of filters.libavdeviceprovides an abstraction to access capture and playback devices.libavresampleimplements audio mixing and resampling routines.libswscaleimplements color conversion and scaling routines.
Tools
- avconv is a command line toolbox to manipulate, convert and stream multimedia content.
- avplay is a minimalistic multimedia player.
- avprobe is a simple analisys tool to inspect multimedia content.
- Additional small tools such as
aviocat,ismindexandqt-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
Conding examples are available in the doc/example directory.
License
Libav codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.