diff --git a/html5video/index.html b/html5video/index.html
index 7d86a6e..4b1b468 100644
--- a/html5video/index.html
+++ b/html5video/index.html
@@ -22,12 +22,12 @@
 <input id="settime" name="time">
 <button id="b" type="button">SKIPTO</button>
 <video id="vid" controls>
-<!--
 <source src="kamo.webm">
 <source src="kamo.mp4">
--->
+<!--
 <source src="yawata.webm">
 <source src="yawata.mp4">
+-->
 </video>
 
 <div id="map"></div>