Public bug reported:
OBS Studio 32.1.0-0ubuntu1 on Ubuntu 26.04 fails to enable NVENC even
though the NVIDIA driver and NVENC runtime are installed and working.
nvidia-smi works, ffmpeg -encoders shows h264_nvenc, hevc_nvenc, and
av1_nvenc, and libnvidia-encode.so.1 is present. OBS loads obs-nvenc.so
but reports warning: [NVENC] Failed to launch the NVENC test process I
guess, then info: NVENC not supported, and only x264 is available in the
encoder list. Using strace shows OBS tries to execute /usr/bin/obs-
nvenc-test, but that file is missing: execve("/usr/bin/obs-nvenc-test",
...) = -1 ENOENT (No such file or directory). dpkg -L obs-studio and
dpkg -L obs-plugins do not contain obs-nvenc-test. This appears to be a
packaging issue in the Ubuntu OBS package.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: obs-studio 32.1.0-0ubuntu1
ProcVersionSignature: Ubuntu 7.0.0-10.10-generic 7.0.0-rc4
Uname: Linux 7.0.0-10-generic x86_64
ApportVersion: 2.33.1-0ubuntu7
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: KDE
Date: Fri Apr 3 11:18:15 2026
InstallationDate: Installed on 2026-01-17 (76 days ago)
InstallationMedia: Ubuntu-Server 25.04 "Plucky Puffin" - Release amd64
(20250415.2)
SourcePackage: obs-studio
UpgradeStatus: Upgraded to resolute on 2026-03-15 (19 days ago)
** Affects: obs-studio (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute
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https://bugs.launchpad.net/bugs/2147187
Title:
OBS missing obs-nvenc-test, so NVENC is unavailable and only x264 is
shown
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