The old method of camera and analog signal is still used for this. And it is pretty cheap still. Are you aware of the step up in costs you are incurring?
I am trying to figure out how to set up a video monitoring system at a theatre.
What I would like to do, is put a video camera in the light booth, then run the signal thru wiring (Cat 5??) throughout the rest of the building so that I can put monitors in the dressing rooms so the actors can know where they are at in the show and not miss any entrances.
Any advice with this would be much appreciated.