OBS Studio error message w/o the workaround, to help others find the
aforementioned temporary solution: "Starting the output failed. Please
check the log for details."
info: [FFMPEG VAAPI encoder: 'streaming_h264'] settings:
device: /dev/dri/renderD128
rate_control: CBR
profile: 578
level: 40
qp: 0
bitrate: 2500
maxrate: 2500
keyint: 60
width: 1920
height: 1080
b-frames: 0
[h264_vaapi @ 0x55bae7f246c0] Driver does not support any RC mode compatible
with selected options (supported modes: CQP).
warning: [FFMPEG VAAPI encoder: 'streaming_h264'] Failed to open VAAPI codec:
Invalid argument
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Touch seeded packages, which is subscribed to libva in Ubuntu.
https://bugs.launchpad.net/bugs/1872875
Title:
[Focal] Intel libva va_openDriver() returns -1 (VA-API broken)
Status in Libva:
Unknown
Status in libva package in Ubuntu:
Confirmed
Status in obs-studio package in Ubuntu:
New
Bug description:
Ubuntu 20.04
System selects wrong intel driver (iris_drv_video.so). Therefore cannot use
vaapi hardware decoding
vainfo:
libva info: VA-API version 1.7.0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/iris_drv_video.so
libva info: va_openDriver() returns -1
vaInitialize failed with error code -1 (unknown libva error),exit
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