8.1.2.4 ROI

Region of interest (often abbreviate ROI), is a selected subset of samples within a dataset identified for a particular purpose. Users can select up to 8 key regions of a scene to transmit through separate streams for targeted preview and recording.

By using Milesight ROI technology, more than 50% of bit rate can be saved and therefore less bandwidth demanded and the storage usage reduced. So according to this, you can set a small bit rate for high resolution.

Note: For more details about how to set ROI, please refer to https://milesight.freshdesk.com/a/solutions/articles/69000643441.

Table 1. Description of the buttons
Parameters	Function Introduction
Enable	Check the checkbox to enable the ROI function.
Video Stream	Choose the Video Stream.
ROI	/	Enable/disable the selected ROI areas.
ROI		Delete the selected ROI areas.
Delete All	Clear all areas you drew before.

Note:

You can set a low bit rate. For example, you can set a bit rate with 512Kbps and a resolution with 1080P, then you can see the image quality of ROI is more clear and fluent than the other region.