I-View IR-5MIPN42 5-Megapixels IR Bullet IP Camera - Manual (Page 46)

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Privacy Mask:
Privacy mask enables you to cover certain areas on the live video to prevent certain
spots in the surveillance area from being live viewed and recorded. Enable Privacy mask function,
click and drop the left button of Mouse for setup up the mask.
Allow setup several mask areas, but the total areas cannot exceed 5% of image.
Video system: Choice the video system for the TV out (Composite signal). .
The maximum frame rate will be 30 fps when choice the NTSC mode and 25fps at the PAL mode.
ROI:
ROI (Region of Interest) encoding is used to enhance the quality of images which are specified
in advance. These ROI areas image will first priority to send out for internet transmission when
bandwidth is not enough.
The ROI mode is not effect when enable the VBR mode.