Key concepts : Performance guidelines : NVR performance : Bandwidth per camera or live view
 
Bandwidth per camera or live view
Variable bit rate
Depending on resolution, frame rate and video quality a camera using H.264 compression may generate the following bit rates:
• 352 x 240 @ 30 FPS, high quality = 0.4 Mbps
• 720 x 576 @ 30 FPS, high quality = 1 Mbps
• 1280 x 720 @ 30 FPS, high quality = 2 Mbps
• 1920 x 1080 @ 30 FPS, high quality = 4 Mbps
• 1920 x 1080 @ 30 FPS, medium quality = 2.8 Mbps
• 1920 x 1080 @ 30 FPS, low quality = 2 Mbps
• 1920 x 1080 @ 10 FPS, high quality = 2.4 Mbps
• 1920 x 1080 @ 10 FPS, low quality = 1.2 Mbps
Table 1: Bitrate table (H.264 estimate) in Mbps with high quality image (x0.7 = standard quality)
Frames/s
1
6
10
15
30
CIF
(352x240)
0.16
0.2
0.24
0.3
0.4
D1 0.4M
(720x576)
0.4
0.5
0.6
0.75
1
720p 1M
0.8
1
1.2
1.5
2
SXGA 1.3M
(1280x1024)
1
1.25
1.5
1.9
2.5
HD 2M
(1920x1080)
1.6
2
2.4
3
4
3M
2
2.5
3
3.75
5
5M
3.2
4
4.8
6
8
Please note that these are estimates providing a high quality image under most conditions. If the scene is less complex (indoors with little detail and not much motion) or the camera has very little noise (daylight, good DNR) the bit rate can be lowered further. Generally do not use less than half of the indicated values.
If video compression is set to lower quality or capped at a defined max bandwidth, the bit rate can be significantly lower at the cost of lower image quality. DNR can further reduce bandwidth, especially for grainy night images, but shows less detail during motion.