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Compression
Resolution
Frame Rate
Bit Rate
Reference bit
rate
I Frame
Watermark
enable
5.9.1.3.2 Snapshot
The snapshot interface is shown as in Figure 5-24.
Please refer to the following sheet for detailed information.
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 and MJPG.
The resolution here refers to the capability of the network
camera.
PAL: 1~25fps; NTSC: 1~30fps.
Main stream: You can set the bit rate here to change the
video quality. The large the bit rate is, the better the
quality is. Please refer to recommend bit rate for detailed
information.
Extra stream: In CBR, the bit rate here is the max value.
In dynamic video mode, the system needs to lower the
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. The default value is 50.
Recommended value is frame rate *2.
This function allows you to verify if the video has been tampered
with or not.
Here you can select the watermark bit stream, watermark mode,
and watermark character. The default character is DigitalCCTV.
The max length is 85 characters. The characters can only
include number, character, and underscore.
Figure 5-24
138
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