Right Click Menu - Dahua NVR21-S2 Series User Manual

Right click mouse to cancel zoom and go back to the original interface.
3) Manual record function
It is to back up the video of current channel to the USB device. System cannot backup the video of
multiple-channel at the same time.
Click button , system begins recording. Click it again, system stops recoridng. You can find the record
file on the flash disk.
4) Manual Snapshot
Click to snapshot 1-5 times. The snapshot file is saved on the USB device or HDD. You can go to
the Search interface (chapter 4.5) to view.
5) Bidirectional talk
If the connected front-end device supports bidirectional talk function, you can click this button. Click
button to start bidirectional talk function the icon now is shown as
bidirectional talk buttons of digital channel becomes null too.
Click again, you can cancel bidirectional talk and the bidirectional talk buttons of other digit al
channels become as
6) Registration
Shortcut menu. Click it to go to the registration interface to add/delete remote device or view its
corresponding information. Please refer to chapter4.2.2 for detailed information.
7) Switch bit streams
Click to switch the bit stream type of the main stream and sub stream.

M: Main stream. Its bit streams are big and definition is high. It occupies large network bandwidth
suitable for video wall surveillance, storage and etc.

S: Sub stream. Its definition is low but occupies small network bandwidth. It is suitable for general
surveillance, remote connection and etc. Some series products support two sub streams (S1, S2).
Refer to chapter 4.2.5.1 Encode for detailed information.

4.3.4 Right Click Menu

Figure 4-65
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. Now the rest
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