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CCTV

CCTV Storage

Estimate the storage (TB) and bandwidth (Mbps) of an IP camera system based on resolution, FPS, codec, activity level, recording hours and retention days. These are estimates using a typical VBR bitrate. 100% in your browser.

Typical surveillance 10–15 fps · real-time 25–30 fps.

H.265 cuts ~50 % vs H.264 · H.265+ (Smart) ~65 %.

Activity / motion level

More motion in scene = more bitrate under VBR (low ×0.6 · medium ×1.0 · high ×1.4).

24 h = continuous recording · fewer hours if you record only on events/motion.

Examples
redzilla.cl — cctv 
 
  
 
 
Total storage
 
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Total bandwidth
 
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recording from all cameras
 
 
 
Bitrate per camera
 
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 TB —  
 
 Mbps —  
 
 GB/cam/day —  
 
  
 
Calculation breakdown
 
 
  
ItemValueNote
   
 
 
 
 How it is calculated · bitrate, storage and bandwidth 
 
 1. Base bitrate (Mbps) at H.264 / 15 fps / medium activity:
1MP=2, 2MP=4, 4MP=8, 5MP=10, 8MP=16.

 
 2. bitrate/camera = base × (fps/15) × codec × activity.
            Codec: H.264=1.0, H.265=0.5, H.265+=0.35.
            Activity: low=0.6, medium=1.0, high=1.4.

 
 3. GB/camera/day = bitrate(Mbps) × 3600 × hours / 8 / 1000
(Mbps to megabytes/s divided by 8, then to GB).

 
 4. Total TB = GB/camera/day × cameras × retention / 1000 ·
Total Mbps = bitrate/camera × cameras.

 
 5. These are estimates: real bitrate is VBR and depends on the scene,
            lighting, manufacturer and encoder settings. Size with headroom.

 
 
 
 
 
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