In this brief how-to, I will show you how you can set up a RTSP relay/proxy server using the Live555 Proxy.
Essentially what the Live555 proxy server allows you to do is to connect to a backend video feed and relay it to your RTSP clients via unicast. The number of clients you can relay to depends on the hardware of your proxy server as well as the network. Bandwidth usage can easily be calculated by multiplying the backend feed in KB/s by the number of clients connected to your relay server.