Axis Network video Manual page 109

MPEG-4 calculation:
Approx. bit rate / 8(bits in a byte) x 3600s = KB per hour / 1000 = MB per hour
MB per hour x hours of operation per day / 1000 = GB per day
GB per day x requested period of storage = Storage need
Note: The formula does not take into account the amount of motion, which is an important
factor that can influence the size of storage required.
Camera Resolution
No. 1 CIF
No. 2 CIF
No. 3 4CIF
Total for the 3 cameras and 30 days of storage = 204 GB
Table 12.1b
Motion JPEG calculation:
Image size x frames per second x 3600s = Kilobyte (KB) per hour/1000 = Megabyte (MB) per hour
MB per hour x hours of operation per day / 1000 = Gigabyte (GB) per day
GB per day x requested period of storage = Storage need
Camera Resolution
No. 1 CIF
No. 2 CIF
No. 3 4CIF
Total for the 3 cameras and 30 days of storage = 1002 GB
Table 12.1c
BANDWIDTH AND STORAGE CONSIDERATIONS - CHAPTER 12
Approx. bit rate
(kbit/s)
170
400
880
Bit Rate (kbit/s)
13
13
40
Frames per MB/
second hour
5 76.5
15 180
15 396
Frames per MB/
second hour
5 234
15 702
15 2160
109
Hours of
operation GB/day
8 0.6
8 1.4
12 5
Hours of
operation GB/day
8 1.9
8 5.6
12 26