a) An electronic limit usually imposed in cameras to avoid overly bright or dark signals. When improperly applied, can result in loss of picture information in very bright or very dark areas. Also used in switchers to set the cutoff point for mixing video signals. b) The electronic process of shearing off the peaks of either the white or black excursions of a video signal for limiting purposes. Sometimes, clipping is performed prior to modulation, and sometimes to limit the signal so it will not exceed a predetermined level.