CCTV Hard Drive Calculator

Camera Stream: H.264 (DVR SYSTEMS)
Camera Resolution:
QCIF (176×120) 1 Megapixel
CIF (352×240) 2 Megapixel
4CIF (704×480) 3 Megapixel
Video Quality: Highest Medium Standard
Average Frame Size: KB

Number of Cameras: -10 -1 +1 +10

Frame Rate per Camera:
Hours Each Camera Will Record per Day: Hours Per Day
Desired Storage (Number of Days) per
-10 -1 +1 +10

Total Bandwidth Required: Per Camera:

Estimated Storage:


  • 1 frame per second is the lowest frame rate
    recordable and 30 frames per second is the maximum which is real time
  • There is no real need to record in real time
    unless there are regulatory reasons as in case of government facilities
    or casinos
  • Recording at 1 frame per second is what
    traditional analog systems record
  • At 3 – 5 frames per second recording you will
    not miss any activity (remember this is per second)