[wyager]

You can use OBS for things like compositing a video of your face over a video of your computer screen, and allowing output to a loopback monitor interface (i.e. virtual camera / microphone) would allow you to share that view via generic video conferencing software like Jitsi or Zoom.

[geerlingguy]

This. It's currently impossible, AFAICT, to use OBS to composite/produce a stream that is fed into video chat software like Zoom, Hangouts, Bluejeans, etc.

[cricalix]

Using a plugin for OBS (Windows at least), you can absolutely output to a virtual camera, and use all of the compositing, filters, scenes etc in OBS. You don't get audio output, but you could probably solve that with a virtual audio cable. I do the video thing with Workchat and Bluejeans without issue, and just use my headset for audio.

I currently composite a view of my local harbour, my webcam, and a chroma-keyed nyancat gif, with a second scene for full-sized webcam. Works a charm, and actually uses less CPU that Chrome does when Chrome is routing that video to the VC.