Bridging RTSP to WebRTC on iOS: Feeding GStreamer Frames into a WebRTC Pipeline

Most WebRTC tutorials on iOS assume your video comes from the device camera. You call RTCCameraVideoCapturer, point it at the front lens, and the framework handles the rest. But a large class of real applications doesn't have a camera as the source at all — it has an IP camera, a dashcam, a drone fe