Qvis IZEUS 7000 NVR RANGE User Manual page 164

Please refer to the following sheet for detailed information:
Parameter
Channel
Video enable
Code stream
type
Compression
Resolution
Frame Rate
Bit Rate
Reference bit
rate
I Frame
Watermark
enable
5.8.1.3.2 Snapshot
The snapshot interface is shown as in Figure 5-19.
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Function
Please select a channel from the dropdown list.
Check the box here to enable extra stream video. This item is
enabled by default.
It includes main stream, motion stream and alarm stream. You
can select different encode frame rates form different recorded
events.
System supports active control frame function (ACF). It allows
you to record in different frame rates.
For example, you can use high frame rate to record important
events, record scheduled event in lower frame rate and it allows
you to set different frame rates for motion detection record and
alarm record.
The main bit stream supports H.264. The extra stream supports
H.264, MJPG.
The resolution here refers to the capability of the network
camera.
PAL：1～25f/s；NTSC：1～30f/s.

Main stream: You can set bit rate here to change video
quality. The large the bit rate is, the better the quality is.
Please refer to recommend bit rate for the detailed
information.

Extra stream: In CBR, the bit rate here is the max value.
In dynamic video, system needs to low frame rate or
video quality to guarantee the value. The value is null in
VBR mode.
Recommended bit rate value according to the resolution and
frame rate you have set.
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.
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.
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