mediaelement.js - not able to play any embed youtube video on iphone 5/safari -

i use mediaelement player , embed youtube videos in it. code in client-side javascript follows:

$("#player").html(   '<video width=' + width + ' height=' + height + '  autoplay>' +   '<source src=$video_url' + ' type="video/youtube"></source>' +   '</video>' );  $('video').mediaelementplayer({   success: function(player, node) {     meplayer = player;     ...   } }); 

when try on play video on iphone, says "this video unavailable".

what missing? please help.

i found answer here..in case else struggling

http://apiblog.youtube.com/2010/07/new-way-to-embed-youtube-videos.html