COP-USA DVRHRT-16MD - Manual (Page 122)

Digital Video Recorder User Manual
122
Appendix B Calculate 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.
Video
Format
Resolution
Frame Rate
Totally(FPS)
Video Quality Bit Rate (kbps) Used Space(MB/h)
Highest 1024 450
Higher 768 337.5
Medium 512 225
Lower 384 168.75
NTSC CIF 30
Lowest 256 112.5
Highest 1024 450
Higher 768 337.5
Medium 512 225
Lower 384 168.75
PAL CIF 25
Lowest 256 112.5
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 CIF, video quality to Lowest, frame rate to 25 fps for
enabling total 16 channels. He wants the unit to record continuously in a month. Below is the calculation:
Total Recoding capacity =112.5 (mb/h) X 24(hours/day) X30(days) X16(channels)= 1296000(MB)= 1296(GB)
Therefore, customers just install one SATA HDD with 1000GB plus one SATA HDD with 320GB, it can almost record for
one month.