diff -r 7d20d7fd0f76 -r 2a7064b70693 integration/js/edition.js
--- a/integration/js/edition.js	Tue May 28 16:41:52 2013 +0200
+++ b/integration/js/edition.js	Tue May 28 16:42:55 2013 +0200
@@ -34,7 +34,16 @@
             width: 460,
             height: 345,
             controls: true,
-            autostart: true
+            autostart: true,
+            url_transform: function(src) {
+                return [{
+                    type: "video/mp4",
+                    src: src.replace(/\.[\d\w]+$/,'.mp4')
+                }, {
+                    type: "video/webm",
+                    src: src.replace(/\.[\d\w]+$/,'.webm')
+                }];
+            }
         }
     );