Using v4l2loopback virtual cam with google-chrome or chromium on linux while having real webcam in use
(I hope posting an answer to own question is not against TOS here, I made it because I discovered the solution while writing this post, and extensive googling didn't help, so I hope I can help some people looking for solution.) Problem: Google chrome / chromium doesn't open v4l2loopback virtual camera device (won't access it) and report "No camera available"