LT Security LTD2408-2416, Руководство пользователя

Страница: 114 / 119

Digital Video Recorder User Manual
108
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 for 200 fps 8-channel DVR.
Video
Format
Resolution
Farm Rate Totally
(FPS)
Video Quality
Bit Rate
(kbps) Used Space
(MB/h)
Highest 640 281
Higher 512 225
Medium 384 168.7
Lower 256
112.5
PAL CIF 25
Lowest 128 56
Highest 640 281
Higher 512 225
Medium 384 168.7
Lower 256
112.5
NTSC CIF 30
Lowest 128 56
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 NTSC cameras, set resolution to CIF, video quality to Lower, frame rate to 240 fps for
enabling total 8 channels. He wants the unit to record continuously in a month. Below is the calculation: