VIVOTEK
Click Viewing Window to open the viewing region settings page. On this page, you can configure the Region of Interest and the Output Frame Size for different streams. For example, you can crop only a portion of the image that is of your interest, and thus save the bandwidth needed to transmit the video stream. As the picture shown below, the area of your interest in a parking lot should the vehicles. The blue sky is of little value for the surveillance purpose.
Region of Interest
(Viewing Region)
Output Frame Size
(Size of the Live View Window)
User's Manual - 51
