Tryit Editor v2.9

Edit This Code:
<!DOCTYPE html> 
<html> 
<body> 

<video id="myVideo" width="320" height="240" controls>
  <source src="movie.mp4" type="video/mp4">
  <source src="movie.ogg" type="video/ogg">
  Your browser does not support the video tag.
</video><br>

<button onclick="getPlaySpeed()" type="button">What is the default playback speed?</button>
<button onclick="setPlaySpeed()" type="button">Set video to be play in slow motion</button>

<script>
var x = document.getElementById("myVideo");

function getPlaySpeed() { 
    alert(x.defaultPlaybackRate);
} 

function setPlaySpeed() { 
    x.defaultPlaybackRate = 0.5;
    x.load();
} 
</script> 

</body> 
</html>