Common Intermediate Format <communications, standard> (CIF) A {video} format used in {videoconferencing} systems, which supports both {NTSC} and {PAL} signals, with a {data rate} of 30 {frames per second} (fps), with each {frame} containing 288 lines and 352 {luminance} {pixels} per line. CIF is part of the {ITU} {H.261} videoconferencing standard. CIF is also known as Full CIF (FCIF) to distinguish it from {Quarter CIF} (QCIF), a related video format standard that transfers one fourth as much data as CIF. (2007-05-14)