Is it possible to broadcast video from web cameras from your server?

Question

Video broadcast

There are several computers in the local network, 1-2 web cameras are connected to them, all traffic passes through the server. It is necessary to broadcast video on demand from a particular camera to the Internet. This is the main task, the option of creating your own page on apache, or connecting any service (preferably free) is being considered. In general, the future task to do in the form of a webinar.