map, if you will, that could be displayed over the top of video
playback, synchronised at the frame level, several years ago.
Think of the overlay track as a clear tape that has been placed over a 
spool of existing film.  For every frame of film, you have a transparent 
overlay frame.
. . . More on this in a later posting . . .
Shannon Norrell
(C) 05/31/2007
--webdood
 
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