Vivotek IP2121 - Manual (Page 42)

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Video and motion detection
Adjust image settings
"Time stamp" and "Text on image" will be enclosed in image for reference. The
timestamp is captured from date and time of Network Camera that is maintained by an
on-board real-time clock. "Color" setting is independent of the connected camera and
“B/W” option can speed up the encoder a little. “Default size” option here will be the
default size of video window when users first connect to Network Camera. “Default
quality” option here will be the default quality when users first connect to Network
Camera. And the "Modulation" type is auto-detected during initialization, but
administrators can still set it manually. To adjust image settings for best visual quality,
press
and a motion picture window will pop up for your reference. There
are four fields including "Brightness", "Contrast", "Hue" and "Saturation" for video
compensation. Each field has eleven levels ranged from -5 to +5. While adjusting,
administrators can click on
to check prior to the setting in memory. If the
adjustment is not good, administrators can click on to restore the original
settings without change. After configuration done, click on to close this window.
If parameters are changed without saving, they will be used until the next system
startup.
Maximum frame rate
This limits the maximal refresh frame rate.
Bandwidth utilization limit
Each Video Server can be limited in bandwidth utilization by administrators according to
its priority and importance of location. "Bandwidth limit" is most useful to balance
network utilization when multiple Video Server’s are installed in the same network. It is
more effective than changing image quality only and achieves better performance with
adequate image size and quality.
Configure motion detection
The channel can have its own settings of motion detection independently. The settings
including “Object size” and “Sensitivity” allow administrators fine tune to fit into the
environment. The “Object size” decides the space ratio of motioned objects over the
monitored screen. The “Sensitivity” sets the measurable difference between two
sequential images that would indicate motion. The larger object size and lower
sensitivity will make Network Camera ignore small variations in images. While the