If anyone, using Fedora Linux 42, has issues with OBS-Studio and the Virtual-Camera mode:

That's because of an incompatibility between OBS-Studio 31.0 and the v4l2loopback Kernel module in version 0.14.0.

The fix for that is in obs 31.0.3, which is on the way from testing to stable right now. Should be offered as an RPM update within the next days.

Fedora Bugfix Update:
https://bodhi.fedoraproject.org/updates/FEDORA-2025-85fcdbf461

Upstream Bug: https://github.com/obsproject/obs-studio/issues/11891

#linux #fedora #obs #v4l2loopback

FEDORA-2025-85fcdbf461 — bugfix update for obs-studio — Fedora Updates System

management of Fedora Project updates

And the bugfix for OBS did arrive in the stable repositories :-) #obs #fedora #fedora42
@Larvitz thanks for this information. Maybe I will come back to Fedora tonight with its version 42 (after tried few months EndeavourOS) and I'm a OBS user.