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Thanks for the info, but I already have all of this part working. The problem is that v4l2loopback only provides a virtual _webcam_ (video source), not a virtu

by wdfx 7y ago

Thanks for the info, but I already have all of this part working. The problem is that v4l2loopback only provides a virtual _webcam_ (video source), not a virtual _screen_ - the two are different and are handled differently both by browsers (webrtc) and desktop conference apps (Slack, Teams, etc). I guess the other issue is that conference apps treat webcam and screen capture differently; usually if someone is sharing a screen, then that feed takes over the full view for all participants so they you can actually read the content. I don't want my screen recording only to show up in my _webcam_ view, which is usually just a tiny thumbnail.

bronco21016 7y ago
OBS will handle the screen grabbing. At least on Ubuntu 18.04 I can select individual windows or even the whole screen.
- xyzzy_plugh 7y ago
  The parent is pointing out functionality that only pops up for explicit screensharing -- changing your camera to a screen grab won't trigger these. In particular, one I've found very useful with Zoom is being able to zoom in to a small region and scroll around. I also suspect Zoom prioritized resolution (for content clarity) over frame rate for screen sharing, which probably doesn't apply when it's just a "webcam" in the eyes of the client. I'm guessing your window capture would get decimated in terms of quality.