Display Settings - Vivotek NR9581 User Manual

Display Settings

Maximum number of view cells: This determines the number of view cell on window, and also takes
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effect with the number of layout pages. For example, if there are 320 channels using the 1+31 layout,
there will be 10 layout pages in the LiveClient window. The configuration changes take effect after the
LiveClient is re-started.
Enable auto stream size: The Auto Stream Size feature dynamically adjusts the stream sizes of video
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feeds from network cameras in order to reduce CPU load and bandwidth consumption.
It is often the case that in surveillance deployments the physical dimensions of monitors, the
effectiveness of visual stimulus, and the operators' regions of interest can all be very limited.
Streaming large-size videos at all times will be a waste of bandwidth and system computing power.
CIF and VGA size videos are usually sufficient for the operators watching surveillance screens.
When enabled, your LiveClient station automatically requests smaller-size streams as video feeds (any
from streams #1 ~ #4) from the network cameras. For example, the frame size of video stream #4 will
be reduced to 320x240 (CIF). Depending on the actual size of view cells on the LiveClient monitoring
screen, the VAST server automatically requests different video streams.
When the size of view cells is manually expanded, a VAST server requests a different stream. This is
called Stream Jump. Shown below are the details of the corresponding stream jumps.
View cell size
4:3 resolutions
<= 320x240
> 320x240 or 640x480
16:9 resolutions
<= 384x216
> 384x216 or 640x360
1:1 (fisheye cameras)
<= 384x384
> 384x384 or 640x640
Facts about Auto Stream Size:
• The Auto Stream Size takes effect when,
1. The size of view cell is changed.
2. Inserting a new camera, or when the "Auto add newly-inserted camera" feature is applied.
3. Double-click or click-and-drag cameras into view cells.
4. When Auto Stream Size feature is enabled (the configuration on this window).
5. Through the layout change.
• The LiveClient utility automatically adjusts stream selection according to the size of view cells, no
user's configuration is required.
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Stream jump to...
stream #4 (CIF)
stream #1
stream #4 (CIF)
stream #1
stream #4 (CIF)
stream #1
User's Manual - 211