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9. Attachment B: Bandwidth Estimation
Please note the value of the table is for reference only. The bandwidth utilization is determined by the
factor of
1. Quality setting – Bandwidth subjects to determined by best effort or fix bandwidth setting.
Video clarity and smooth motion are two complete different characteristic of compression.
2. Video scene - The scene will conduct the key factor of bandwidth will be used. More
motion change, the higher bandwidth will be consumed in general compression
technologies rule of thumb.
3. Network throughout – you may have 10Mbps, 100Mbps, 1000Mbps Ethernet or 12mbps
802.11b, 54Mbps 802.11g or 110Mbps WLAN 802.11n or above with varieties of signal
strength.
Effort Base Video Quality
Image
Resolution
Best Better Normal Fast Fastest
176 x 122
(QCIF)
47-370KBS N/A N/A N/A N/A
352 x 240
(CIF)
370-700kbps 170 – 325kbps 120–260kbps 110-227kbpS 100-200KBPS
640 x 480
(VGA)
942-2000kbps 610-1140kbps 590-930kbps 539-910kbps 500-840kbps
704 x 480
(D1)
1300-2700kbps 680–1450kbps 580-1200kbps 600-950kbps 600-880kbps
For Example.: The transmission speed on the Internet is 2fps under 352 x 240, i.e. 40k*2=80k to
200*2=400k per second. It is suggested to apply for 512K "upload" bandwidth.
Note 1: What the camera needs at the client end is the “upload” bandwidth. However, most ISPs
offer higher download bandwidth than upload bandwidth. Therefore, symmetrical bandwidth
is a good choice for users who need to streaming the video to external network.
Note 2: Whenever you have a network planning, you may need to reserve 32 kbps to 64kbps for
audio.
©2007 Asante Networks Inc., All rights reserved. NetCam are registered trademarks of Asante Network, Inc.
All other names may be trademarks or registered trademarks of their respective owners. Specifications subject to change without prior notice.
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