<html>
<body>
<button onclick="getPlaySpeed()" type="button">What is the playback speed?</button>
<button onclick="setPlaySpeed()" type="button">Set video to be play in slow motion</button>
<br>
<video id="video1" controls="controls">
<source src="mov_bbb.mp4" type="video/mp4">
<source src="mov_bbb.ogg" type="video/ogg">
Your browser does not support HTML5 video.
</source></source></video>
<script>
myVid=document.getElementById("video1");
function getPlaySpeed()
{
alert(myVid.playbackRate);
}
function setPlaySpeed()
{
myVid.playbackRate=0.5;
}
</script>
<p>Video courtesy of <a href="http://www.bigbuckbunny.org/" target="_blank">Big Buck Bunny</a>.</p>
</body>
</html>