D-Link SecuriCam DCS-5300 User Manual page 43

Using the DCS-5300 with an Internet browser
(continued)
Recommendations for setting video for the best
performance:
"Best performance" means the image refresh rate should be the fastest possible
and the video quality should be the best possible at the lowest network bandwidth
possible. Three factors, Maximum frame rate, Fix bit rate, and Fix quality in
the Video Configuration page, are related to performance.
My priority is real-time motion images
To achieve a real-time visual effect, the network bandwidth should be large
enough to transmit 20 image frames per second (fps) or more. If you are on a
broadband network over 1 Mbps, you can set Fix bit Rate to 1000Kbps or
1200Kbps, or set Fix quality to achieve the maximum frames. The maximum
frame rate is 25 in 50Hz system and 30 in 60Hz system. If your network
bandwidth is more than 384Kbps, you can adjust Fix bit rate according to
your bandwidth and set the maximum frame rate of 25 to 30.
If the images vary dramatically in your environment, you may slow down the
maximum frame rate to 20 to decrease the transmitted data for better video
quality. Since the human eye could not easily differentiate between 20 and 25
or 30 frames per second, the slower frame rate will not be noticed. If your
network bandwidth is below 384 Kbps, you should adjust the bit rate according
to your bandwidth and experiment to allow for the best frame rate that can be
achieved. The faster frame rate in a slow network will blur the images. You
may also try to choose Half in size option for better images or Half x 2 for
larger image size. Because the network has burst constraints and everyone's
environment is not the same, any poor connection will impair normal
performance.
My priority is clear identification for each image
To have the best video quality, you should set Fix quality to detailed or excellent
and tune the Maximum frame rate to suit your network bandwidth. If you get
some broken pictures in a slow network, you can set TCP protocol in
Connection type for a more accurate transmission but the received images
may have a lag. Note that any slow connection with multiple users will impair
performance.
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