User's Manual
162
Figure 4-69
4.3.3.3 Instant backup
You can record the video of any channel and save the clip into a USB storage device.
By clicking , the recording is started. To stop recording, click this icon again. The clip is
automatically saved into the connected USB storage device.
You can record the video of any channel and save the clip into a USB storage device.
4.3.3.4 Manual Snapshot
You can take one to five snapshots of the video and save into a USB storage device.
By clicking , you can take snapshots. The snapshots are automatically saved into the
connected USB storage device. You can view the snapshots on your PC.
To change the quantity of snapshots, select
Main Menu
>
CAMERA
>
Encode
>
Snapshot
,
in the
Manual Snapshot
list, select the snapshot quantity.
4.3.3.5 Two-way talk
You can perform the voice interaction between the Device and the remote device to improve
efficiency of emergency.
Step 1 Click to start two-way talk function the icon now is shown as . Now the rest
two-way talk buttons of digital channel becomes null too.
Step 2 Click again, you can cancel two-way talk.
4.3.3.6 Switch bit streams
Via this function, you can switch the channel main stream/sub stream according to current
network bandwidth.
● 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.
Click to switch the bit stream type of the main stream and sub stream.
● M: Main stream.
● S: Sub stream. Some series products support two sub streams (S1, S2). Refer to "4.2.6.1
Encode" for detailed information.
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