[dwild]

Yesterday (actually 3h before that bounty was posted), I wanted exactly that feature, but I couldn't get it soon enough (I did find obs-virtual-cam at the same time as the bounty was posted, what are the odds).

A bunch of friends and I were listening to a live quiz, on Facebook and we were in a Messenger video calls together to solve it together. The issue was that it was quite hard to watch it together while being live together, so I just pointed my phone at my computer screen, but it was far from ideal.

Essentially my goal was to screenshare on my computer and then the sound quality would have been much better. Messenger does support screenshare but it's weird and doesn,t seems to works if someone is on his phone (which we all were).

So essentially the use case is to share your screen, but also be able to add stuff to it, like your own webcam, and use that on ANY streaming software. Many does support screensharing, but not all of them, and even if they do, adding a camera on top of it is most probably not possible.