: If the screen is blank upon opening, you must manually select your hardware. Go to "Device" in the menu and choose your "USB Video Device" .

: While many devices are plug-and-play, some may require a specific driver to be installed before the software can communicate with the hardware.

: Go to the Devices tab in the top menu and select your camera (often listed as "USB2.0 PC Camera" or "USB Video Device" ).