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NAME
     vidwhacker - grab images and apply random filters to them

SYNOPSIS
     vidwhacker [-display host:display.screen] [-root]  [-window]
     [-verbose] [-stdin] [-stdout] [-delay seconds]

DESCRIPTION
     The vidwhacker program grabs a image from the system's video
     input,  applies random image filters to it, and displays the
     result. The vidwhacker  program  does  not  terminate  until
     killed.   It  depends  heavily  on xv(1) and the various PBM
     tools (e.g., ppmrelief(1).)

OPTIONS
     vidwhacker accepts the following options:

     -root   Draw on the root window.

     -window Pop up a new window displaying the  image.   When  a
             new  image  has  been  fully processed, destroy that
             window and pop up a new one.  This is the default.

     -verbose
             Print diagnostics.

     -stdin  Instead of grabbing an image from the system's video
             input,  read  an  image  to  maniupulate from stdin.
             This image must be in

     -delay seconds
             How long to sleep between images.  Default 3 seconds
             (the  actual  elapsed  time is significantly longer,
             due to processing time.)  ppm(5) format.   The  pro-
             gram   will  still  perform  repeated  random  image
             transformations, but it will  always  use  this  one
             image as its starting point.

     -stdout Instead of displaying the image on a  window  or  on
             the root, write the new image on stdout, and exit.

ENVIRONMENT
     DISPLAY to get the default host and display number.

     XENVIRONMENT
             to get the name of a resource  file  that  overrides
             the  global resources stored in the RESOURCE_MANAGER
             property.

BUGS
     Grabbing video images is, of course, very  system-dependent.
     It works on SGIs, and on Linux systems that have the qcam(1)
     program.  If your system  does  things  differently,  you'll
     need  to  edit  the  vidwhacker  script (look for the grab()
     function.)

     It's slow.

TO DO
     It might be interesting to rewrite this to use gimp(1)  plu-
     gins  instead of the pbm tools.  It probably wouldn't be any
     faster, but there would be a wider variety of effects avail-
     able.

SEE ALSO
     X(1), xscreensaver(1), xv(1), ppmtogif(1), cjpeg(1)

COPYRIGHT
     Copyright O 1998, 1999 by  Jamie  Zawinski.   Permission  to
     use,  copy,  modify,  distribute, and sell this software and
     its documentation for any purpose is hereby granted  without
     fee,  provided that the above copyright notice appear in all
     copies and that both that copyright notice and this  permis-
     sion   notice   appear   in  supporting  documentation.   No
     representations are  made  about  the  suitability  of  this
     software  for  any  purpose.  It is provided "as is" without
     express or implied warranty.

AUTHOR
     Jamie Zawinski <jwz@jwz.org>, 18-Jan-98.

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