Demian Gutberlet would you consider something though, a fast workaround could be to be able to change Rendering Style Mode from none to a totally new Material Mode. You already have that power implement for material export images, but if you could set a Mode for it we could export 2 mp4s to help masking in post-production on Adobe AE and track the colors.
I think that'd be very less time consuming for you to implement, and a way to give the possibility to the users to work with mp4s to go further with Enscape.
So much thing could be done with this such as changing backgrounds, specific tuning, blend modes, idk tell me if that would be possible.