IST DESKTOP
<script src="text/javascript">
// Do not name the function "play()"
function playVideo(){
    var video = document.getElementById("video");
    video.play();
    video.addEventListener("ended",function(){
        window.location = "http://www.google.com";
    });
}
</script><BR><BR>OK
<video width="320" height="240" controls>
  <source src="video.php" type="video/mp4">
Your browser does not support the video tag.
</video>