Data size and bit rate estimates – Canon VB-M700F User Manual
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System Design
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Example 2: MPEG-4 recording
• Video recording from 8 cameras (VB-C60).
• Video size is 320 x 240 and video quality is 3.
• Recording frame rate is 30 fps.
• Data size per second is approximately 150 KB.
Although the actual recording data size depends on the objects recorded by each camera, this calculation assumes the
typical sizes given above.
If MPEG-4 videos from 8 cameras are recorded at 30 frames per second in continuous recording mode, the required hard
disk space is approximately 99 GB per day (= 150 KB x 8 cameras x 60 seconds x 60 minutes x 24 hours =
103,680,000 KB).
Example 3: H.264 recording
• Video recording from 8 cameras (VB-M40).
• Video size is 320 x 240 and video quality is 3.
• Recording frame rate is 30 fps.
• Data size per second is approximately 84 KB.
Although the actual recording data size depends on the objects recorded by each camera, this calculation assumes the
typical sizes given above.
If H.264 videos from 8 cameras are recorded at 30 frames per second in continuous recording mode, the required hard
disk space is approximately 55 GB per day (= 84 KB x 8 cameras x 60 seconds x 60 minutes x 24 hours = 58,060,800 KB).
Note that the actual recording file size may be different from the size in the table, depending on the weather conditions and
the complexity of the scene. For example, video of an empty corridor would typically result in values smaller than the above
values. Conversely, complex scenes, such as a crowded shopping mall, would result in larger values.
Data Size and Bit Rate Estimates
The following tables shows typical data sizes per frame (in KB) for various combinations of video quality and size settings.
Estimates of the Data Size for VB-S30D/VB-S31D/VB-S800D/VB-S900F (JPEG)
(Unit: KB)
Estimates of the Bit Rate for VB-S30D/VB-S31D/VB-S800D/VB-S900F (H.264)
● Video Size: 1080p Category
(Unit: Mbps)
Video
Quality
Video Size
1080p Category
720p Category
4:3 Category
480 Ч 270
960 Ч 540
1920 Ч 1080
320 x 180
640 x 360
1280 x 720
320 x 240
640 x 480
1280 x 960
1
8.21
23.65
73.01
4.48
12.03
36.21
5.16
14.05
43.71
2
11.77
33.82
110.21
6.74
17.16
51.13
7.32
20.14
65.16
3
14.79
44.26
156.53
8.33
21.77
68.28
9.16
26.29
92.37
4
19.33
62.53
236.60
10.68
29.17
99.36
12.01
36.85
139.33
5
34.24
121.71
470.58
17.69
54.09
203.91
20.83
71.81
287.77
Video
Quality
I-Frame Interval: 1 sec.
Frame Rate: 10 fps
Frame Rate: 15 fps
Frame Rate: 30 fps
480 Ч 270
960 Ч 540
1920 Ч 1080
480 Ч 270
960 Ч 540
1920 Ч 1080
480 Ч 270
960 Ч 540
1920 Ч 1080
1
0.25
0.75
2.19
0.32
0.96
3.17
0.49
1.51
5.28
2
0.35
0.97
2.89
0.39
1.18
4.10
0.65
1.83
6.84
3
0.57
1.61
4.97
0.65
1.97
6.99
1.01
3.38
12.42
4
0.66
1.94
6.12
0.89
2.70
8.95
1.42
4.25
15.69
5
0.96
2.76
8.90
1.25
3.58
12.98
1.85
6.01
23.13