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yuvinactive(1)		      MJPEG tools manual		yuvinactive(1)

       yuvinactive - Set a part	of the video to	a defined state

       yuvinactive [options] _/dev/stdin _/dev/stdout

       yuvinactive operates with a area	(rectangle) you	define.	 By default is
       sets it to really black.	But you	can tell tell  yuvinactive  to	darken
       the area, or fill it with a certain color. It can also make the content
       of the area unreadable, like extreme softening of the  area.   Or  copy
       the  surrounding	area into the the specified area.  You usually have to
       use the -i option which sets the	area in	which yuvinactive  will	 work.
       If  no  additional  option is given yuvinactive stet the	area to	black.
       But you can use the -d -s -a -c options to  tell	 yuvinactive  that  it
       shall do	something different with that area. You	can only use one addi-
       tional option. yuvinactive was built to remove unwanted things  like  a
       logo, from the movie.

       lav2yuv accepts the following options:

       -h   Some help output

	    Specifies  the  area yuvinactive shall work	with. With this	option
	    the	area is	set to black. There are	no restrictions	because	of in-

       -d num
	    How	much darker the	area should be compared	to the original	color.
	    This is done by setting a lower value for the luma.	The  value  is
	    in percent from the	original luma.

       -s num
	    Here you specify a certain color in	the yuv	format.

       -a num
	    With  this	option the program uses	on pixel and averages the sur-
	    rounding pixels with the same color	 to  make  the	original  less
	    readable.  The number tells	the the	program	how much pixels	around
	    the	original pixel should be overwritten with the same color.  You
	    have to use	a even number here

       -c num
	    Sets  the  number  of surrounding pixels yuvinactive should	use to
	    copy them into the given area. You have to use a even number here.
	    yuvinactive	 uses the lines	above and below	the specified area for
	    copying them into the area.

       Right, there are	bugs hidden. The thing is not well tested, and not ev-
       ery  option might work. yuvinactive is in the first state of becoming a
       useful program.

       This man	page was originally written by Bernhard	Praschinger.
       If you have questions, remarks, problems	or you just  want  to  contact
       the developers, the main	mailing	list for the MJPEG-tools is:

       For more	info, see our website at

       mjpegtools(1),  lav2yuv(1),  mpeg2enc(1), yuvscaler(1), yuv2lav(1), yu-
       vdenoise(1), yuvplay(1),	yuvmedianfilter(1)

MJPEG Tools Team		30 October 2003			yuvinactive(1)


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