diff --git a/index.html b/index.html
index b53730e..045c07d 100644
--- a/index.html
+++ b/index.html
@@ -91,7 +91,7 @@
 	        			options.video.defaultQuality = (options.video.defaultQuality >= options.video.quality.length - 1) ? 0 : options.video.defaultQuality++;
 	        			dp.switchQuality(options.video.defaultQuality);
 	        		}
-	        	}, 4000);
+	        	}, 8000);
 	        });
 	        dp.on('playing', function(){
 	        	isWaiting = false;