There are 2 demos,one simple webrtc demo and one based on Google webrtc demo. All those demos use websocket as signaling protocol, so you need a websocket server (which is provided with websocket library) and stun/turn server (which is not provided). Video is supported by stun server and chat messages and signaling by websocket server.
There are some free stun/turn server as open source code, but these are not included with sgcWebsockets package.
To record image and video files, you must check if webrtc supports this.