HIKVISION DS-7600NI-K2/4G Series User Manual page 101

Note
Virtual stream can only transcode remote live view sub-stream or remote playback video
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stream.
The number of virtual stream channels is limited. When the virtual stream transcoding
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capability is not enough, remote live view sub-stream or remote playback video stream would
still be the original stream.
6. Optional: Configure region of interest (ROI).
ROI
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
Figure 6-39 General Parameters
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