Digital Zoom; Instant Backup; Manual Snapshot - Dahua NVR21-4KS3 Series User Manual

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● You can start, pause and close playback.
● The information such as channel name and recording status icon are shielded during instant
playback and will not display until you exit playback.
● During playback, screen split layout switch is not allowed.
● Tour has high higher priority than the instant playback. The instant playback function is not
available when tour function is in process and the live view control bar automatically hides
either. The function becomes available again after tour ends.
● Supports AcuPick. For more details, see "5.6.3.9 AcuPick".
Go to the Main Menu > SYSTEM > General > Basic to set instant playback time.

5.6.3.2 Digital Zoom

You can zoom in a specified zone of the current channel to view details. They system supports multi-
channel zoom. You can use the digital zoom in the following two ways:
● Click
. The icon switches to
mouse button.
For some models, when the image is enlarged in this way, the selected area is zoomed
proportionally according to the window.
● Point to the center that you want to enlarge, and then scroll the mouse to enlarge the area.
When the image is in the enlarged status, you can drag the image toward any direction to view the
other enlarged areas. Right-click to cancel zoom and go back to the original video image.

5.6.3.3 Instant Backup

You can record the video of any channel and save the clip to a USB storage device.
Clicking
to start the recording. To stop recording, click this icon again. The clip is automatically
saved to the connected USB storage device.

5.6.3.4 Manual Snapshot

You can take one to five snapshots of the video and save to a USB storage device.
Click
to take snapshots. The snapshots are automatically saved to the connected USB storage
device. You can view the snapshots on your PC.
. Select an area. The area is enlarged after you release the
Figure 5-17 Zoom
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