diff --git a/www/demos/one2one.html b/www/demos/one2one.html
index 5bef9a4..aa95307 100644
--- a/www/demos/one2one.html
+++ b/www/demos/one2one.html
@@ -295,8 +295,9 @@
         });
 
         $("#btn_start").click(startDemo);
+        // Never play util windows loaded @see https://github.com/ossrs/srs/issues/2732
         if (conf.autostart) {
-            startDemo();
+            window.addEventListener("load", function(){ startDemo(); });
         }
     });
 </script>
diff --git a/www/demos/room.html b/www/demos/room.html
index 5d75f7f..164213d 100644
--- a/www/demos/room.html
+++ b/www/demos/room.html
@@ -199,8 +199,9 @@
         });
 
         $("#btn_start").click(startDemo);
+        // Never play util windows loaded @see https://github.com/ossrs/srs/issues/2732
         if (conf.autostart) {
-            startDemo();
+            window.addEventListener("load", function(){ startDemo(); });
         }
     });
 </script>
\ No newline at end of file