[Plugin: VideoJS – HTML5 Video Player for WordPress] Video Doesnt Play on iPad and FFox(mac)

my test page:

my shortcode:

[video mp4="http://1.convertmyflash.com/files/2010/11/mp4Test.mp4" poster="http://video-js.zencoder.com/oceans-clip.png" preload="true" autoplay="true" width="480" height="270"]

my video: http://216.38.60.102/~t/chamber/wp-content/uploads/2010/11/David-Letterman-Magician-Steve-Cohen.mp4
encoding = MP4/H.246

please advise thanks
art

http://wordpress.org/extend/plugins/videojs-html5-video-player-for-wordpress/