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DCVI Standalone DVR User’s Manual
178
VBR mode.
Reference bit
rate Recommended bit rate value according to the resolution and
frame rate you have set.
I Frame Here you can set the P frame amount between two I frames. The
value ranges from 1 to 150. Default value is 50.
Recommended value is frame rate *2.
Audio encode Please select from the dropdown list. There are three options:
G711a/G711u/PCM.
Audio source
Please select from the dropdown list. There are two options:
Normal/HDCVI. In the normal mode, the audio signal comes
from the Audio In. In the HDCVI mode, the audio signal comes
from the coaxial cable of the camera.
Watermark
enable
This function allows you to verify the video is tampered or not.
Here you can select watermark bit stream, watermark mode and
watermark character. Default character is DigitalCCTV. The max
length is 85-digit. The character can only include number,
character and underline.
5.8.1.3.2 Snapshot
The snapshot interface is shown as in Figure 5-20.
Figure 5-20
Please refer to the following sheet for detailed information.
Parameter Function
Snapshot type
There are two modes: Regular (schedule) and Trigger.

Regular snapshot is valid during the specified period you
set.

Trigger snapshot only is valid when motion detect alarm,
tampering
alarm or local activation alarm occurs.
Image size It is the same with the resolution of the main stream.
Quality
It is to set the image quality. There are six levels.
Interval
It is to set snapshot frequency. The value ranges from 1s to 7s.
Or you can set customized value. The max setup is
3600s/picture.
Copy
Click it; you can copy current channel setup to other channel(s).
5.8.1.3.3 Video Overlay
The video overlay interface is shown as in Figure 5-21.