diff --git a/pywb/static/vidrw.js b/pywb/static/vidrw.js
index 6c50c93a..2e024bda 100644
--- a/pywb/static/vidrw.js
+++ b/pywb/static/vidrw.js
@@ -109,6 +109,10 @@ __wbvidrw = (function() {
         var embed = document.createElement("embed");
         embed.src = wbinfo.url;
         player.appendChild(embed);
+
+        if (!window.MutationObserver) {
+            handle_embed_tag(embed);
+        }
     }
 
     function handle_embed_tag(elem)