Quarter CIF definition communications, standard
(QCIF), a video
format standard used in videoconferencing, that transfers one fourth as much data as Common Intermediate Format
QCIF is defined in ITU H.261 as having 144 lines and 176 pixels per line, with half as many chrominance
pixels in each direction. QCIF is suitable for videoconferencing
systems that use telephone lines. The codec
standard specifies that QCIF compatibility is mandatory, and CIF compatibility is optional.