<!DOCTYPE html>
<html>
<body>
<h1>HTML DOM Events</h1>
<h2>The onprogress Event</h2>
<video controls onprogress="myFunction()">
<source src="mov_bbb.mp4" type="video/mp4">
<source src="mov_bbb.ogg" type="video/ogg">
Your browser does not support HTML5 video.
</video>
<p>Video courtesy of <a href="https://www.bigbuckbunny.org/" target="_blank">Big Buck Bunny</a>.</p>
<p id="demo"></p>
<script>
function myFunction() {
document.getElementById("demo").innerHTML = "Downloading video.";
}
</script>
</body>
</html>