User manual
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 www.vivotek.com 
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[do3=<state>]\r\n 
where <state> can be 0 or 1. 
Example: Query the status of digital output 1  
Request: 
http://myserver/cgi-bin/dido/getdo.cgi?do1 
Response: 
HTTP/1.0 200 OK\r\n 
Content-Type: text/plain\r\n 
Content-Length: 7\r\n 
\r\n 
do1=1\r\n 
Capture single snapshot 
Note: This request require normal user privilege 
Method: GET/POST 
Syntax: 
http://<servername>/cgi-bin/viewer/video.jpg?[channel=<value>][&resolution=<value>]
[&quality=<value>] 
If the user requests the size larger than all stream setting on the server, this request 
will failed! 
PARAMETER VALUE  DEFAULT  DESCRIPTION 
channel 
0~(n-1)  0  the channel number of video source 
resolution 
<available 
resolution> 
0  The resolution of image 
quality 
1~5  3  The quality of image 
Server will return the most up-to-date snapshot of selected channel and stream in 










