diff -r b9bf0f859121 -r 30864533a356 web/index.html
--- a/web/index.html	Thu Oct 24 15:17:48 2013 +0200
+++ b/web/index.html	Thu Oct 24 17:06:48 2013 +0200
@@ -166,7 +166,7 @@
 	 + '              type: "AutoPlayer",'
 	 + '              height: "360",'
 	 + '              autostart:  true,'
-	 + '              url_transform: function(url) { if(url.substr(url.length - 4).toLowerCase()==".flv"){ return url.replace("/ddc_player/video/","/ddc_player/flv:video/"); } return url.replace("/ddc_player/video/","/ddc_player/mp4:video/"); }'
+	 + '              url_transform: function(url) { var can_play_mp4 = !!document.createElement("video").canPlayType("video/mp4"); if(!can_play_mp4){ return url.replace(/\.mp4$/i,".webm"); }else{ return url; } }'
 	 + '          }'
 	 + '          ,{'
 	 + '              type: "Polemic",'