here's a quick looped video ala Will from Taylor Street Studio's videos - 3x 1 second shots of a work party when I was in Delhi in 2006.
thanks very much to Will for showing me how to get the looping in a browser working!
(remove the spaces around the )
width="640" height="496" autoplay="false" controller="true" loop="palindrome" >
loop="true" = loop forwards
loop="palindrome" = loop backwards & forwards
http://stream.uen.org/medsol/digvid/html/EX_QT_EMBEDLooptag.html has details & examples also