Manual: ppmtv

Ppmtv User Manual(1)				   General Commands Manual				Ppmtv User Manual(1)

NAME
       ppmtv - make a PPM image look like taken from an American TV

SYNOPSIS
       ppmtv dimfactor

       [ppmfile]

DESCRIPTION
       This program is part of Netpbm(1).

       ppmtv  reads a PPM image as input and dims every other row of image data down by the specified dim factor.  This fac‐
       tor may be in the range of 0.0 (the alternate lines are totally black) to 1.0 (original image).

       This creates an effect similar to what I've once seen in the video clip 'You could be mine' by Guns'n'Roses.  In	 the
       scene I'm talking about you can see John Connor on his motorbike, looking up from the water trench (?)  he's standing
       in.   While the camera pulls back, the image gets 'normal' by brightening up the alternate rows of it. I thought this
       would be an interesting effect to try in MPEG. I did not yet check this out, however.  Try for yourself.

OPTIONS
       There are no command line options defined specifically for ppmtv, but it recognizes the options common  to  all	pro‐
       grams based on libnetpbm (See  Common Options .)

SEE ALSO
       ppm(1), ppmdim(1)

AUTHOR
       Copyright (C) 1993 by Frank Neumann

DOCUMENT SOURCE
       This manual page was generated by the Netpbm tool 'makeman' from HTML source.  The master documentation is at

	      http://netpbm.sourceforge.net/doc/ppmtv.html

netpbm documentation				      16 November 1993					Ppmtv User Manual(1)