: Check your GSCAM configuration window. If it shows Connecting... or Link Failed , your decoder is blocked at the network firewall or your internet connection dropped. Try power-cycling both your internet router and the receiver.

export GSCAM_CONFIG="rtspsrc location=rtsp://YOUR_CAMERA_IP:554/stream1 ! rtph264depay ! h264parse ! avdec_h264 ! videoconvert" Use code with caution. Method C: Testing with a Virtual Stream (Validation)