Common Intermediate Format

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CIF (Common Intermediate Format) is used to standardize the horizontal and vertical resolutions in pixels of YUV sequences in video signals. QCIF means "Quarter CIF". These two formats are the most common in video codiug. To have fourth the area as "quarter" implies, height and width of the frame are halved.

Video resolutions
Format Resolution in pixels
SQCIF 128 × 96
QCIF 176 × 144
CIF 352 × 288
4CIF 704 × 576
9CIF 1056 × 864
16CIF 1408 × 1152
TV 720 × 576
SIF 352 × 240
SIF (NTSC) 360 × 240
SIF (PAL) 360 × 288

See also: DVD, VCD, HDTV, DVB

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