VIDEO_WB_GAIN

VIDEO_MAX_SHUTTER

Description

> Get or Set the maximum (longest) shutter speed.

> In auto shutter mode (exposure mode has to be auto mode in some sensors), the sensor will adapt it's shutter speed to the lighting condition. The less lighting condition, the longer shutter speed. However, in the video streaming, the longer shutter causes the motion blur problem. User could limit sensor's the longest shutter speed in its adaptation algorithm to have less motion blur. However, it causes higher video noise problem. The URL could help user to trade off these two situations (higher video noise and motion blur) well. Please refer the Camera Setup Design Specification for further details.

> The error message will be returned if the encoder does not support this URL.

Input Argument

> 0: Default maximum auto shutter speed.
> 1: fast level of maximum auto shutter speed (1/120 or 1/100 seconds)
> 2: normal level of maximum auto shutter speed (1/120 or 1/100 seconds)
> 3: normal level of maximum auto shutter speed (1/120 or 1/100 seconds)
> 4: normal level of maximum auto shutter speed (1/120 or 1/100 seconds).
> This shutter speed level 4 might not available if the desired inter-frame time interval is longer than this shutter speed.
> For example, this shutter speed is not available when the video frame rate is 30 which its inter-frame time interval is 33 msec.

Attribute

- Readable and Writable
- On-Fly

Return of Message

- Read Operation

> OK: VIDEO_MAX_SHUTTER='0'

- Write Operation

> OK: VIDEO_MAX_SHUTTER='0'
> or
> ERROR: VIDEO_MAX_SHUTTER='0'

Applicability

- EPL Platform : All Encoders with sensor MT9M131
- PlatfotmT : All Encoders with sensor MT9M131

Status

> Valid

See Also

> VIDEO_WB_MODE, VIDEO_WB_GAIN, VIDEO_EXPOSURE_MODE, VIDEO_EXPOSURE_GAIN, VIDEO_AGC_GAIN, VIDEO_SHUTTER_MODE, VIDEO_SUHTTER_SPEED, VIDEO_FLICKLESS

Example

- Read Operation

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

- Write Operation

> http://ip:port/cgi-bin/encoder?USER=Admin&PWD=123456&VIDEO_MAX_SHUTTER=0
> or
> http://ip:port/cgi-bin/cmd/encoder? VIDEO_MAX_SHUTTER=0

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