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54 | Performance Series IP Camera Software Configuration Guide
Main Stream
Frame Rate (FPS) PAL: 1~25 fps; NTSC: 1~30 fps.
Bit Rate Type
Select either VBR or CBR.
Note You can set the video quality in VBR mode.
Reference Bit
Stream
Displays the Reference Bit Rate value according to the resolution and
frame rate that you have selected.
Bit Rate
In VBR, the Bit Rate here is the maximum value. In CBR, it is a fixed value.
See the Reference Bit Stream for a recommended value.
I Frame Interval
Set the number of P-frames between I-frames. The value ranges from 25 to
150. The default value is 50.
The recommended value for
I Frame Interval
is
2 times
the frame rate setting.
Watermark
This function allows you to verify that the video has not been altered. Select
to enable the watermark function, and then type the watermark text. The
default watermark text is DigitalCCTV. The maximum length is 85 digits.
Only numbers, letters, and the underscore character ( _ ) can be used.
Sub Stream
Enable
Click the check box to enable the extra stream.
This function is enabled by default.
Code-stream Type General bit stream.
Encode Mode
Select from four options for Encode Mode: H.264 (Main Profile), H.264H
(High Profile), H.264B (Baseline Profile), and MJPEG mode.
H.264: Main profile encoding mode.
H.264H: High profile encoding mode.
H.264B: Baseline profile encoding mode.
MJPEG: In this encoding mode, the video needs a larger bit stream to
guarantee the video definition. You can use the maximum bit stream value
in the Recommended Bit to get better video output.
Resolution There are multiple resolutions to select from the drop-down list. The
recommended bit stream value is different for each resolution.
Frame Rate PAL: 1~25 fps; NTSC: 1~30 fps.
Bit Rate Type
Select either VBR or CBR.
Note You can select the video quality in VBR mode. The value ranges from
1 to 6.
Recommended Bit
Rate
Recommended bit rate value according to the resolution and frame rate you
have set.
Bit Rate
In CBR, the bit rate here is the maximum value. In dynamic video, the
system needs a lower frame rate or lower video quality to adapt to the
current bandwidth.
I Frame Interval
Set the number of P-frames between I-frames. The value ranges from 25 to
150. The default value is 50.
The recommended value for
I Frame Interval
is
2 times
the frame rate setting.
Table 5-3 Video Bit Stream Configurations (cont’d)
Parameter Function
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