How to broadcast commercials on TV?

Question

A television

Hello, there is a building, a coaxial cable for TV broadcasting is stretched throughout all the premises, is it possible to broadcast commercials when the TV is turned on? As a TV source, we have a DOM.RU provider. TVs without Wi-fi and no Smart TV in them.

Answer 1

It all depends on what signal comes to the end TV (dvb-c, iptv, pal/secam). Technically, there is some marker of the beginning and end of the ad block in the information flow, when the flow passes through the relay, your block is inserted into the places of these markers. Organizationally - a piece of iron is installed that captures, modifies and broadcasts content to the network.