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This fixes a regression introduced by: commit 3f63685c3554aea7f72bab1fdbde440820816d37 and commit 632c34993195f716e9fa575af3de80d07fd50991 ...where command-lines like: ffmpeg -v verbose -hwaccel qsv \ -init_hw_device qsv=qsv,child_device=/dev/dri/renderD128 \ -hwaccel_output_format qsv -f rawvideo -pix_fmt yuv420p \ -s:v 352x288 -r:v 25 -i input.yuv \ -vf 'format=nv12,hwupload=extra_hw_frames=120' \ -an -c:v h264_qsv -y output.h264 ffmpeg -v verbose -hwaccel qsv \ -init_hw_device qsv=qsv,child_device=/dev/dri/renderD128 \ -hwaccel_output_format qsv -f rawvideo -pix_fmt nv12 \ -s:v 352x288 -r:v 25 -i input.yuv \ -vf 'format=nv12|qsv,hwupload=extra_hw_frames=16,vpp_qsv=procamp=1:saturation=1.0,hwdownload,format=nv12' \ -pix_fmt nv12 -f rawvideo -fps_mode passthrough -an -y output.yuv ...produced errors like: [hwupload @ 0x55b6171d0dc0] A hardware device reference is required to upload frames to. [Parsed_hwupload_1 @ 0x55b6172053c0] Query format failed for 'Parsed_hwupload_1': Invalid argument Error reinitializing filters! Failed to inject frame into filter network: Invalid argument Signed-off-by: U. Artie Eoff <ullysses.a.eoff@intel.com> Signed-off-by: Anton Khirnov <anton@khirnov.net>
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 means to alter decoded audio and video through a directed graph of connected 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.