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videoin(1)							    videoin(1)


NAME    [Toc]    [Back]

     videoin - Video Library video-in-a-window tool

SYNOPSIS    [Toc]    [Back]

     videoin [-t <title>] [-v <n>] [-n <devnum>] [-f] [-F <format>] [-d]
	  [-b] [-B #] [-A] [-I]	[-z n/d] [-r n/d] [-8] [-m] [-h] [-p x y]

PARAMETERS    [Toc]    [Back]

     -t	<title>
	  Title	of displayed window.

     -v	<n>
	  The number of	the video input	node to	connect	to.

     -n	<devnum>
	  The number of	the video device to be used.


     -f	  Disable forking.

     -F	<fmt>
	  Select video format.


     -d	  Print	debug messages.


     -b	  Don't	put borders on window.


     -B	# Use #	buffers	for buffering video data between video input and the
	  display.  The	default	is 3.


     -A	  Display when source is available.


     -I	  Print	node and path IDs for use with command line interface.

     -z	<n/d>
	  Initial zoom ratio numerator/denominator.

     -r	<n/d>
	  Initial frame	rate numerator/denominator.


     -8	  Display using	8 bit pixels (depends on hardware).


     -m	  Display using	monochrome (depends on hardware).





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videoin(1)							    videoin(1)



     -h	  Print	usage message and exit.

     -p	<x> <y>
	  Window position x,y (must be last option if specified).

DESCRIPTION    [Toc]    [Back]

     The application videoin puts video	in a window on the workstation.

     This application first tries to establish a path between the video	source
     and the screen directly.  If this fails, it tries to grab frames to
     memory and	then writes to the screen using	the window system as if	it
     were a normal graphics application.

     On	hardware that supports these operations	the video can be zoomed	and
     panned using the +	and - keys (zoom) and the left and right arrow keys
     (pan).

     If	the -f option is specified videoin will	run in the foreground rather
     than spawning a child and returning immediately.

     If	the -F option is specified videoin will	select the video format	using
     the VL_FORMAT SetControl.	Videoin	will also attempt to select an input
     node that has the specified format.  Current choices are listed below and
     upper or lower case is ignored.

     This option is hardware dependent and is not available to Galileo or
     Indigo2 video users.

	 COMPOSITE
	 SVIDEO
	 RGB
	 BETACAM
	 MII
	 SMPTE_YUV
	 DIGITAL_COMPOSITE
	 DIGITAL_COMPONENT
	 DIGITAL_COMPONENT_SERIAL
	 DIGITAL_COMPONENT_DUAL
	 DIGITAL_COMPONENT_DUAL_SERIAL
	 DIGITAL_INDYCAM

     If	-A is specified	videoin	prints messages	indicating when	the shared
     video source is available or when it has been taken away by another
     application.

     If	-I is specified	videoin	prints the node	and path IDs on	stdout.	These
     are required when using the command line interface	tool.

     If	-b is specified	videoin	puts up	its output window with no border.






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videoin(1)							    videoin(1)



     If	-B # is	specified videoin uses # buffers for buffering video data
     between the video input and the display.  The default is 3	which allows
     for one buffer being filled, one being emptied and	one (the last input
     frame) saved for screen refresh during window exposures.  To determine
     how much memory is	being used for each buffer, caculate pixel size	(in
     bytes) times the number of	pixels on a line times the number of lines.
     For certain video devices,	this number is rounded up to the next 4k page
     boundary.	Note that this option is relevant only for videoin operation
     which uses	the video to memory to screen data path	(currently only	VINO
     uses this).


     If	-z is specified	videoin	zooms the video	to a ratio of n/d within the
     range supported by	the hardware.

     If	-p x y is specified videoin will place the upper right corner of the
     output window at x,y within the range supported by	the hardware. This
     must the the last option on the command line if it	is specified.

SEE ALSO    [Toc]    [Back]

      
      
     videopanel(1), vlinfo(1), vlcmd(1)


									PPPPaaaaggggeeee 3333
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