Pattern to record: One program works while a second reports that the device is busy.

Trace video, input and output separately

Identify the USB webcam selected in the call application and test video separately from any built-in microphone. Bluetooth headset audio is a different path and does not explain USB camera capture failure by itself. One possible explanation is that another process retains exclusive access to the camera or audio endpoint.

Compare the failing connection

1. Compare another USB port and application, check privacy permission and test sustained capture.
2. Close applications methodically and inspect active capture processes.

Before changing the setup

Disconnect any cable with crushed insulation or an overheating camera. Reinstalling drivers will not fix an application holding the device.

Restore the intended function

If the checks support this cause, correct application settings or restart the responsible service. Verification should cover video, microphone if fitted, multiple applications, sleep and a sustained call.

For an assessment of your computer and external webcam, contact AEPC in Burswood or call 027 908 8880. Provide the model and the conditions that reproduce this problem. Workshop visits are by appointment.