Canon Vb-C50fi user manual 5-25, GetStillImage Parameters, Creating Web Pages

Distributing Videos Using a Browser Only

Displaying Live Video from a Specified Zoom Magnification as Still Pictures

By specifying the camera zoom magnification as a parameter in the HTML code beforehand, you can display the picture from a specified camera zoom magnification. 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?z=100>

*The underlined portion is a sample IP address. Enter the actual IP address set for the VB-C50Fi (→ P.3-6).

GetStillImage Parameters

Parameter	Description
	Specifies camera zoom. “z” is ten times the zoom ratio of the widest angle, and
z or zoom	“zoom” is the view angle in 0.01° units (horizontal direction). If this parameter is
	omitted, camera zoom is not controlled.
	Specifies camera backlight compensation. When this parameter is set to on, the
b or back_light	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.
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 process
	will be continued. When “quit_on_error” is specified, the process will be aborted.
option	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 picture display size. This can be set to 160 ⋅ 120, 320 ⋅ 240, and 640
v or image_size	⋅ 480 for NTSC, and 192 ⋅ 144, 384 ⋅ 288, and 768 ⋅ 576 for PAL. The formats
	for specifying “v” and “image_size” are different: “v” specifies the horizontal
	dimension only and uses the format “v=640”, for instance, while “image_size”
	specifies both horizontal and vertical dimensions and uses the format
	“image_size=320 ⋅ 240”, for instance.

Creating Web Pages

Note

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

sequence number in the seq parameter.

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