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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 yuvinactive 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
            interlacing.

       -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 Tools Team                30 October 2003                 yuvinactive(1)

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