Create you own chatroulette with this open source script.
Unlike other webcam chat scripts that need a flash or Red5 server for streaming audio and video, it works on all servers that support PHP and MySQL because it works on the principle of P2P (peer-to -peer) with the protocol developed by Adobe, the RTMP (Real Time Messaging Protocol).
It requires only an API key Adobe Stratus you can get here: https://www.adobe.com/cfusion/entitlement/index.cfm?e=cirrus
Also note that it is possible to run the roulette with a Red5 server for greater speed and better stability of the site.
It is also available in numerous different languages!