AVer SF1311H-CP - Manual (Page 46)

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ROI
ROI stands for Region on Interest. There are 2 ROI settings can be set.
1. Select ROI0 or ROI1 from drop-down list.
2. Using mouse to drag the frame on screen to select the ROI area.
3. Click Save to save the setting.
4. The ROI setting can be selected to view from Video Profile in Live View Mode.