D-Link DCS-2100+ Bedienungsanleitung PDF herunterladen (Seite 53)

DCS-2100 User’s Manual

D-Link Systems, Inc.

Using the DCS-2100 with an Internet Browser

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.

Recording settings for 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 1Mbps, 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 384Kbps,

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 320x240 in size option for better images or

640x480 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.

Recording settings for 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.

Recording settings to compromise between real-time and clear images

If you have a broadband network, set Fix quality to Good image quality, or higher,

instead of setting the Bit rate. Otherwise, fix the bit rate according to your actual network

speed and set the frame rate to 30. If the image quality is low, select a lower frame rate

above 15. If the image quality is still not improved, select a lower bit rate.

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D-Link DCS-2100+ Bedienungsanleitung Seite 53