Distributing Videos Using a Browser Only

Displaying Live Video from a Specified Angle

as Still Pictures

By specifying the camera angle as a parameter in the HTML code beforehand, you can display the picture from a specified camera angle. The example below displays a still picture shot with the camera panned right by 40° and tilted down 10°.

<IMG SRC=http://192.168.100.1/-wvhttp-01-/GetStillImage?p=40&t=-10>

* The underscored portion is a sample IP address. Enter the actual IP address set for the VB101.

GetStillImage Parameters

Parameter

Description

p/pan

Specifies the camera pan angle. "p" is a 1°unit, and "pan" is a 0.01°unit. For

example if the camera pans right 20°, then p is 20 and pan is 2000. If this

 

 

parameter is omitted, the camera pan angle is not controlled.

t/tilt

Specifies the camera tilt angle. "t" is a 1°unit, and "tilt" is a 0.01°unit. If this

parameter is omitted, the camera tilt angle is not controlled.

 

 

Specifies camera zoom. "z" is ten times the zoom ratio of the widest angle,

z/zoom

and "zoom" is the view angle in 0.01°units (horizontal direction. If this

 

parameter is omitted, camera zoom is not controlled.

b/back_light

Specifies camera backlight compensation. When this parameter is set to on, the picture

captured will be bright and when this parameter is set to off, the picture captured will be

 

dark. If this parameter is omitted, camera backlight compensation is not controlled.

camera_id

Assigns the numbers 1 to 4 to camera 1 to 4. If this parameter is omitted, the

camera that is currently selected will be used.

 

delay

Waiting time until camera focus is stabilized (in milliseconds). Specified in the

range 0 to 10000.

 

 

 

 

Specifies how errors are dealt with. When "skip_on_error" is specified, the

option

process will be continued. When "quit_on_error" is specified, the process will

be aborted. The following errors can occur: failure to acquire camera control

 

right, loss of camera control, camera selection errors and camera control

 

errors. To omit, the default value is "quit_on_error".

seq

Allows any number (sequence number) to be specified to avoid displaying old

still pictures (numeric value).

 

 

 

 

Specifies the display size of the picture. Settings of 640 x 240, 320 x 240, and

 

160 x 120 are possible. Styles for v and image_size are different: For v, only

v/image_size

the horizontal size is specified, as in "v=640", for instance; while for

 

image_size, both horizontal and vertical sizes are specified, as in

 

"image_size=320x240", for instance.

q/quality

Specifies picture quality. Use an integer between 1 and 99. If omitted, the

value set in the VB101 is used.

 

 

 

c

If old still pictures are displayed, you can prevent this recurring by specifying

Note

a sequence number in the seq parameter.

 

 

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Canon VB101 appendix 114