Please see http://veggiespam.wordpress.com/2012/12/09/watch-ipad-movies-from-sd-cards/ (short link = http://wp.me/pjfmk-2G) for the purpose of this simplistic page. If those links don't work, try searching on veggiespam.com
It may take a few seconds for the image to generate; be sure to use File → Save_Page_As to save to disk.