Quarter Common Interchange Format. QCIF images contain YCbCr data and are 176 pixels wide and 144 pixels high (one-fourth the size of CIF images). H.261 codecs are required to support images in this format.
Quarter Common Intermediate Format (“Q-sif”). A measure of video resolution, displaying 176 pixels by 144 lines. Has half of the CIF spatial resolution of FCIF. This is the “default” minimum H.261 format. Typically used in desktop videoconferencing.
Quarter Common Intermediate Format. A video resolution of 1/4 the size of FCIF - 176 pixels horizontally and 144 pixels vertically. It is used primarily ion low bite rate (128Kbps and lower) videoconferencing.
Full CIF (Common Intermediate Format) displays video frames containing 352 pixels grouped in 288 non interlaced luminance lines. (Quarter CIF) employs half the CIF spatial resolution in both horizontal and vertical directions displaying 176 pixels grouped in 144 non-interlaced luminance lines. Note: Full CIF format is used in videoconferencing when several people need to be viewed or details need to be magnified over a full screen. Conversely, QCIF is used in most desktop videoconferencing applications where head and shoulder pictures are sent from desk to desk.
Common Intermediate Format/Quarter Common Intermediate Format. Standards-based formats for communicating between video-conferencing systems from different vendors. CIF is a progressive format for computer animation with 360¥ 288 pixels per frame at 30 frames per second. QCIF is a progressive format for computer animation with 180¥ 144 pixels per frame at 30 frames per second. QCIF has one-quarter the resolution of FCIF (Full Common Intermediate Format).
Data transfer rate is a quarter of the Full CIF. The QCIF (Quarter Common Intermediate Format) standard is defined as 176 x 144 resolution frames transferred at 9.1Mpbs.The QCIF is suitable for videoconferencing by telephone lines.
Quarter Common Intermediate Format. A standard size for images produced by low-resolution digital cameras and video cameras. QCIF images are 176 pixels wide and 144 pixels tall (176 x 144). QCIF is smaller than CIF, QVGA, and VGA.