LevelOne WCS-2010 - Manual (Page 21)

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shooting fast-moving images, you may want to slow the maximum frame rate down to 20
fps in order to lower the rate of data transmission. This allows for better video quality and
the human eyes cannot readily detect the differences between those of 20, 25, or 30
frames per second. If your network bandwidth is below 384 Kbps, set the “Fix bit rate”
according to your bandwidth and try to get the best performance by fine-tuning with the
“Maximum frame rate”. In a slow network, greater frame rate results in blur images.
Another work-around is to choose “Half” in the “Size” option for better images, or “Halfx2”
for a larger image view. Video quality performance will vary somewhat due to the number of
users viewing on the network; even when the parameters have initially been finely tuned.
Performance will also suffer due to poor connectivity because of the network’s burst
constraint.
Only Quality Images Will Do
To have the best video quality, you should set “Fix quality” at “Detailed” or “Excellent” and
adjust the “Maximum frame rate” to match your network’s bandwidth. If your network is
slow and you receive “broken” pictures, go to the TCP protocol in “Connection type” and
choose a more appropriate mode of transmission. The images may suffer a time delay due
to a slower connection. The delay will also increase with added number of users.
Somewhere Between Real-time and Clear Images
If you have a broadband network, set “Fix quality” at ”Normal” or better, rather than setting
“Fix bit rate”. You can also fix the bandwidth according to your actual network speed and
adjust the frame rate. Start from 30 fps down for best results but not below 15 fps. If the
image qualities are not improved, select a lower bandwidth setting.
Viewing Double size image
The Network Camera not only provide standard CIF/SIF format video, but also provide
4CIF/4SIF format video. For selecting “Double” video size, the video from the Network
Camera can provide more details, but less frame-rate (up to 10 frames/sec). Besides,
“Normal x 2” selection will do 200% digital zoom for both the width and height of the video.