Quarter CIF

Quarter CIF

(communications, standard)(QCIF), a video format standardused in videoconferencing, that transfers one fourth as muchdata as Common Intermediate Format (CIF).

QCIF is defined in ITU H.261 as having 144 lines and 176pixels per line, with half as many chrominance pixels ineach direction. QCIF is suitable for videoconferencingsystems that use telephone lines. The codec standardspecifies that QCIF compatibility is mandatory, and CIFcompatibility is optional.