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Command below failed. ffmpeg -v verbose -init_hw_device vaapi=va:/dev/dri/renderD128 -init_hw_device qsv=qs@va -hwaccel qsv -hwaccel_device qs -filter_hw_device va -c:v h264_qsv -i 1080P.264 -vf "hwmap,format=vaapi" -c:v h264_vaapi output.264 Cause: Assign pair->first directly to data[3] in vaapi frame. pair->first is *VASurfaceID while data[3] in vaapi frame is VASurfaceID. I fix this line of code. Now the command above works. Signed-off-by: Wenbin Chen <wenbin.chen@intel.com>
FFmpeg README
FFmpeg 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.libswresampleimplements audio mixing and resampling routines.libswscaleimplements 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,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
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.