COP-USA DVRH264-D1-8 - Manual (Page 107)

Digital Video Recorder User Manual
101
Appendix B Calculation of Recording Capacity
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 DVR.
Video
Format
Resolution
Farm Rate Totally
(FPS)
Video Quality
Bit Rate
(kbps)
Used Space
(MB/h)
PAL D1 25
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 240
The calculation format is:
Total Recording capacity =Used space per hour (MB/h) (coverage rate of hard disk)
× Recording time (hour) ×channel numbers
Take 4-channel DVR for example:
Total Recoding capacity =700(mb/h) X 24(hours) X30(days) X4(channels)
= 2016000(MB)
= 2016(GB)
If users install one2016GB SATA HDD, it can almost record one month.