FAQs.md

FAQs

Errors

modprobe: FATAL: Module v4l2loopback is in use.

$ sudo modprobe -r v4l2loopback
modprobe: FATAL: Module v4l2loopback is in use.

Background:
The command 'sudo modprobe -r v4l2loopback' tries to reset all virtual devices.
It fails with 'modprobe: FATAL: Module v4l2loopback is in use.' if any application is still accessing the camera devices. Also if a browser is still open, the camera might be accessed and hence the command fails.

Solution:
Close any application which might have or had access to camera devices and try again. If this is still not working, restart your system.

Good to know

Judder or stuck video stream

Background:
Poor internet connection or bandwidth limitation can make the video stream in meeting calls get stuck or judder.

Solution:
Adjust the the maximum video stream size from 720p to 540p in the constants.py file.

Black image instead of video stream

Background:
Some meeting tools restrict the video stream resolution and shape.

Solution:
If you have changed the video stream resolution or shape, this is likely to cause the problem. The default of 720p to 540p should just work fine.