Instructions
Insert the USB end of your laptop webcam into the USB slot on the front of your PS3 console.
Power on your PS3 console and scroll to the far-left side of the XMB menu over the "Settings" icon.
Scroll down and select the "Accessory Settings" option and choose the "Camera Device Settings" option. You will be able to test the image of the USB camera and reduce the flickering by selecting the power frequency that best suits your television and webcam.