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DVR Storage Calculator

Recording Standard/Quality
DVR storage medium size (Hard Disk)
20FPS
Per Camera
4
Number of CCTV Cameras

Analog video resolution QCIF, CIF, 4CIF, HD1, D1, 960Hcctvcalculator7

 QCIF, CIF, 4CIF, HD1, D1, 960H are resolution formats to describe the video resolution (It’s simply the size or dimension of video). All these formats evolved from CIF as its base.

What’s CIF?

CIF: Common Intermediate Format, it’s one of the most common and widely used video transmission format in video conference, CIF’s resolution is 352×288, the frame per second can reach 30fps, and compliant with ITU H.261 video conference protocol. Reference: Common Intermediate Format (Wikipedia)

Formats related to CIF

cctvcalculator8QCIF: Quarter Common Intermediate Format. Simply understand this QCIF is half resolution of CIF both in horizontal and vertical resolution.

DCIF: Double CIF, this is a rare format adapted for CCTV use. DCIF (528×384) .

4CIF: Four times CIF. We can simply understand its resolution (both horizontal and vertical) is two-fold.

Resolution

Resolution xxx*xxx is the image format horizontal television lines* vertical television lines.

Format Resolution (PAL) Resolution (NTSC)
960H 960*576 960*480
D1 704*576 704*480
HD1 352*576 352*480
DCIF 528*384 528*320
2CIF 704*576 704*480
CIF 352*288 352*240
QCIF 176*144 176*120

QCIF vs CIF vs 4CIF vs D1

Reference

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