Publishes your camera into a room over WebRTC, exactly like the real frontend. Open it in the UE editor (PIE) to see this stream appear as a remote streamer — no rebuild needed.
Camera + WebRTC need a secure context, so host this over HTTPS (your online host) or use http://localhost. Opening the file directly (file://) will block the camera.
If bitrate stays 0 and ICE never reaches connected, it's usually a network/NAT issue — add a TURN server below.