VIDEO_DC_LEVEL

Description

Get or set the DC level for the DC-IRIS Lens. This URL is valid if the camera supports the DC-IRIS lens.

The DC-IRIS is a DC-Iris lens. The DSP could set a DC level to the lens to adjust the IRIS in the lens. Then the lighting on the DSP was changed. The DSP sets another DC level to the lens again. Through this feedback system, the DSP could get the optimal lighting for good quality image.

This URL is valid if only of the VIDEO_IRIS_MODE = AUTO.

The error message, VIDEO_DC_LEVEL not found, will be returned if the lens in camera is not a DC-Iris Lens.

Input Argument

level
where level is in the range between 0 to 255.

The actual working range of DC IRIS level depends on the sensor/DSP. Here is the mapping table of level range and sensor/DSP.

Sensor/DSP Value in level

Actual DC Level (write to H/W VR)

IT1
0~255

255 - level

Others
0~1
0
2~128
1~127
129~255
127

Based on the above mapping table, there is no error if the range of level in this URL is out of actual DC level working range in the device. The return code is the echo of the command in this case. For example, the return message of the URL VIDEO_DC_LEVEL=255 in HQ1 camera is

OK: VIDEO_DC_LEVEL=255.

But the actual DC level is 127 in HQ1 camera.

If the level is larger than 255, the error message is returned.

The higher value in level, the smaller aperture in IRIS Lens.

Attribute

Return of Message

VIDEO_DC_LEVEL='50'

OK: VIDEO_DC_LEVEL='50'
or
ERROR: VIDEO_DC_LEVEL='50'

Applicability

Status

Valid

See Also

VIDEO_IRIS_MODE

Example

http://ip:port/cgi-bin/encoder?USER=Admin&PWD=123456&VIDEO_DC_LEVEL
or
http://ip:port/cgi-bin/cmd/encoder?VIDEO_DC_LEVEL

http://ip:port/cgi-bin/encoder?USER=Admin&PWD=123456&VIDEO_DC_LEVEL=50
or
http://ip:port/cgi-bin/cmd/encoder?VIDEO_DC_LEVEL=50

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