I don't know about the greenscreen bit, but BigBlueButton is likely the closest that I know of. It may well have the feature; I've never checked it out myself.

I don't know about the greenscreen bit, but BigBlueButton is likely the closest that I know of. It may well have the feature; I've never checked it out myself. That can also be done by making a fake camera processing pipeline locally, but that's certainly not typical usage. Overview: https://lwn.net/Articles/817146/ https://lwn.net/Articles/817146/ Notes from deployment for a virtual conference: https://lwn.net/Articles/830436/ https://lwn.net/Articles/830436/