Public bug reported:
OBS Studio fails to record using the VAAPI hardware encoding of Intel
Skylake CPUs (Intel(R) Core(TM) i7-6700HQ in my case): "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
STEPS TO REPRODUCE:
- Start obs, Settings, Output, Output Mode "Advanced"
- Streaming, Encoder: FFMPEG VAAPI
- Start recording
EXPECTED RESULT:
- H.264-encoded recording starting with low CPU usage
ACTUAL RESULT:
- Error message popping up: "Starting the output failed. Please check the log
for details."
- Log see above
ANALYSIS AND WORKAROUND:
- vainfo reports this (before I thought bug #1872875 was responsible here):
vainfo: VA-API version: 1.7 (libva 2.6.0)
vainfo: Driver version: Intel iHD driver for Intel(R) Gen Graphics - 20.1.1 ()
- Workaround: Overriding iHD with i965 fixes the issue for me. Start obs with
the LIBVA_DRIVER_NAME environment variable set to "i965" for my Intel Skylake
CPU.
LIBVA_DRIVER_NAME=i965 obs
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: obs-studio 25.0.3+dfsg1-2
ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
Uname: Linux 5.4.0-21-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: KDE
Date: Fri Apr 17 09:34:51 2020
InstallationDate: Installed on 2016-11-26 (1237 days ago)
InstallationMedia: Kubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.1)
SourcePackage: obs-studio
UpgradeStatus: Upgraded to focal on 2020-03-06 (41 days ago)
** Affects: obs-studio (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1873400
Title:
obs-studio FFMPEG VAAPI encoding fails
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/obs-studio/+bug/1873400/+subscriptions
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
