HIKVISION DS-7600NI-K2/4G Series User Manual page 55

ROI is an encoding technology which helps to discriminate the interested region and the
background information in video compression. The interested region would be assigned with
more encoding resource to lossless compression while the background information will be
showed in lossy compression.
1) Click Advanced Settings.
2) Enable ROI.
3) Select an area.
4) Click Draw Area to draw an area on the preview image.
7. Click Apply.
Network Video Recorder User Manual
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