Unable to get output from virtual webcam

[rombert]

I set up a virtual video camera using v2l2loopback and OBS studio, for additional preprocessing

options v4l2loopback devices=1  exclusive_caps=1 video_nr=8 card_label="Virtual Webcam"

In Skype, I can see the webcam listed, but I get just a blank screen in the Settings → Audio & Video preference page. I can access it just fine using other apps, e.g. Cheese.

I do not see any relevant output in $HOME/.var/app/com.skype.Client/config/logs, so I'm not sure how to debug this. Any help would be appreciated.

[rombert]

I also tried using the virtual webcam using https://flathub.org/apps/details/org.jitsi.jitsi-meet , so this is not necessarily a problem with flatpak itself.

[SamuXzX]

Same problem. I tried with OBS from PPA, because the Flatpak version doesn't even show me the virtual cam option: issue on OBS' git.

[GeorgesStavracas]

OBS Studio 27, which is yet to be released soon, will have a Flatpak-friendly implementation of VirtualCam (see obsproject/obs-studio#4552).