rtsp mp4 html5,html - RTSP solution for JavaScript/HTML5 - Stack Overflow

That will enable html5 clients to use web sockets to recieve data from a server which is tunneling the rtp and rtsp data from the server to the client.

The other 10% is going to depend on what technology you want to use in the backend.. e.g. to do the tunneling from the server to the clients.

I have a project @ http://net7mma.codeplex.com which can help for Rtsp consumption and aggregation in .Net

You can then easily use the Html5 Rtsp Player combined with a thin Websocket layer to send the data from the server to the client as required by your application.