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VIVOTEK
User's Manual - 67
• Smart stream: Smart stream effectively reduces the quality of the whole or the non-
interested areas on a screen and therefore reduces the bandwidth consumed.
X
ROI_0
X
ROI_0
Foreground
background
You can manually specify the video quality for the foreground and the background
areas.
Select an operation mode if Smart stream is preferred.
- Auto tracking: The Auto mode congures the whole screen into the background
area. The video quality of part of the screen returns to normal when one or
more objects move in that area. The remainder of the screen where there are
no moving objects (no pixel changes) will still be transmitted in low-quality
format.
- Manual: The Manual mode allows you to configure 3 ROI windows (Region of
Interest, the Foreground areas) on the screen. Areas not included in any ROI
windows will be considered as the Background areas. The details in the ROI
areas will always be transmitted in a higher-quality video format.
As illustrated below, the upper screen may contain little details of your
interest, while the sidewalk on the lower screen is included in an ROI
window.
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