yuvinactive(1)							MJPEG tools manual						    yuvinactive(1)

NAME

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

SYNOPSIS

       yuvinactive [options] </dev/stdin >/dev/stdout

DESCRIPTION

       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  yuvinac-
       tive  that it shall do something different with that area. You can only use one additional option. yuvinactive was built to remove unwanted
       things like a logo, from the movie.

OPTIONS

       lav2yuv accepts the following options:

       -h   Some help output

       -iXxY+XOFF+YOFF
	    Specifies the area yuvinactive shall work with. With this option the area is set to black. There are no restrictions because of inter-
	    lacing.

       -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 surrounding 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.

BUGS

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

AUTHOR

       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:
	 mjpeg-users@lists.sourceforge.net

       For more info, see our website at
	      http://mjpeg.sourceforge.net

SEE ALSO

       mjpegtools(1), lav2yuv(1), mpeg2enc(1), yuvscaler(1), yuv2lav(1), yuvdenoise(1), yuvplay(1), yuvmedianfilter(1)

MJPEG Linux Square						  30 October 2003						    yuvinactive(1)