Pan and Scan - Pan and Scan is a common technique used to fit programming with a 16:9 aspect ratio (such as movies) into the 4:3 aspect ratio of a standard analog TV ReceiverPan and Scan works by matching the height of the movie image to the height of the TV screen. If the movie image is centered on the TV screen, the edges of the movie image will not be seen. Pan and Scan is an alternative to showing the program in the letterbox format.