To make adjustments to a video signal being recorded in order to reproduce white as true white. For example, if the white in a shot is too green due to fluorescent lighting, white balancing adds enough magenta to make the white appear neutral.
white level
An analog video signal's amplitude for the lightest white in a picture, represented by IRE units.
wide-screen
A format for shooting and projecting a movie in theaters in which the original footage doesn't get cut off because of the 4:3 aspect ratio. With the advent of high-definition video, wide-screen 16:9 video is coming into more popular use.
See also [16:9]
wide-screen mask filter
Adds black bars across the top and bottom of a 4:3 image that crop it to a 16:9 format.
