Pan-and-scan:

The process of formatting a wide-screen film onto video by selecting the area of the film frame to show in order to accommodate the different aspect ratios of wide-screen film and television.  During the process, the transferred area of the film must be continuously selected, and scenes encompassing the entire width of the film are often panned or followed from one side to the other.  See also Anamorphic, Aspect ratio, Wide-screen film.