A minimal peer-to-peer video calling demo built with WebRTC.
Uses RTCPeerConnection, getUserMedia, and a basic signaling mechanism (WebSocket or any custom backend) to establish a direct connection between two clients.

• Real-time audio/video streaming between two peers
• Simple UI with local and remote video elements
• ICE candidate exchange
• STUN server support for NAT traversal

1. User media: The browser captures video/audio using getUserMedia().
2. Peer connection: Each client creates an RTCPeerConnection.
3. Offer/Answer exchange: One client creates an offer, the other responds with an answer.
4. ICE candidates: Both peers exchange ICE candidates until a direct connection is possible.
5. Direct streaming: Once connected, media flows peer-to-peer with no server involvement.