How to make calls (video) from the site?

Question

Video broadcast

Hello. I want to create a service with paid calls (video). As on sites with girls of easy virtue, there is a general video broadcast with sound. if a client wants to talk 1 on 1, then he pays for access and he should have the opportunity to somehow talk with the object he called
. .all this should work automatically. ps - this will not be a site with prostitutes)
How to organize all this technically, controlling the duration of the call and auto-reset so that