on demand functionality for live streaming

Hello, we are evaluating your platform for commercial purposes, we wold like to achieve an on-demand functionality similar to VOD examples in documentation, but with a live stream (pulled-stream). We are working with ip-cam rtsp sources streaming in h264. i.e. we’d like the server to automatically manage connection and disconnection from ip-cams (pullstream uri=rtsp://ipaddrofcam../../..), as the number of cameras is high and we’d like to occupy bandwidth only if one or more clients requests a connection to that camera. we have 500 ip-cams. 100 users. we’d like to pullstreams only for users requesting a connection via the server, but keeping configuration of all the 500 cameras. Thank you. Giacomo