The simultaneous live broadcast of the wedding is very simple, including a set of equipment, a projector, several video lines (the length depends on the requirements of the venue) and a set of audio equipment.

A photographer is enough, the price is hard to say, probably within 1500 (one person).

Live video is different from just taking pictures. If you want to switch, you need to add an extra plane seat and switching equipment. As long as the owner can afford it, this is ok. Most photographers can do it, and they have equipment.