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Appendix B Calculate Recording Capacity (D1)

Users can calculate the size of hard disk according to the saving time and DVR recording settings. The DVR

uses fixed video bit rate. The below are the details at different settings.

Video Format

Resoluti

Frame Rate

Totally(FPS)

Video Quality

Bit Rate

(kbps)

Used

Space(MB/h)

PAL

Highest 2M 915

Higher 1.5M 700

Medium 1M 465

Lower 768K 297

Lowest 512K 241

NTSC D1 30

Highest 2M 910

Higher 1.5M 712

Medium 1M 468

Lower 768K 297

Lowest 512K 241

The calculation format is:

Total Recording capacity =Used space per hour (MB/h)

(coverage rate of hard disk) × recording time

(hour) ×channel numbers

For instance, one customer uses PAL cameras, set resolution to D1, video quality to Higher, frame rate to 25 fps

for enabling total 4 channels. He wants the unit to record continuously in a month. Below is the calculation:

Total Recoding capacity =700 (mb/h) X 24(hours/day) X30(days) X4(channels)= 2016000(MB)≈2016(GB)

Therefore, customers just install two SATA HDDs with 1000GB, it can almost record for one month.

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Q-see QT528 User Manual Page 94