VIVOTEK
User's Manual - 59
ROI: higher-quality
non-ROI: lower-quality
As the result, the lower screen is constantly displayed in high details, while the upper
half (non-ROI) is transmitted using a lower-quality format. Although the upper half
is transmitted using a lower quality format, you still have an awareness of what is
happening on the whole screen.
- Hybrid: The major difference between the “Manual” mode and the “Hybrid” mode is that:
In the “Hybrid“ mode, any objects entering the non-interested area will restore the
video quality of the moving objects and the area around them. The video quality of
the associated non-interested area is immediately restored to normal to cover the
moving objects.
In the “Manual” mode, the non-interested area is always transmitted using a low-
quality format regardless of the activities inside.
You should also select the Maximum bit rate from the pull-down menu as the threshold to
contain the bandwidth consumption for both the high- and low-quality video sections in a
smart stream.
- Quality priority: Use the slide bar to tune the quality contrast between the ROI and non-
interested areas.
The farther the slide bar button is to the right, the higher the image quality of the
ROI areas. On the contrary, the farther the slide bar button to the left, the higher the
image quality of the non-interested area.
In this way, you may set up an ROI window as a privacy mask by covering a
protected area using an ROI window, while the remaining screen become the non-
interested area. You may then configure the non-interested area to have a high
image quality, or vice versa.
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