get file length (number of minutes and seconds

I have  a page with videos (see attached code). I  want to have something under the name of each of the videos that tells how long it is.  So for example, next to the phrase "HOW TO Register at the WileyPlus website" I would like it to say 05:24 or something like that

HOW TO Register at the WileyPlus website. 05:24 mins.

I think that the length of the video is available but I don't know how to access it and display it on the webpage.

Can anyone suggest what I need to do?
Thank you.
P.S. Some suggested using this but I am not sure how to use it:
 seconds = document.mediaobject.GetDuration() / document.mediaobject.GetTimeScale()
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
	<title>Statistics 2011</title>
	<meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
	<meta name="keywords" content="data mining, text mining, weka, neural network, classification, clustering, weka tutorial, weka video, knowledge explorer, sentiment mining">
	<meta name="description" content="A series of Weka screencasts that show you how to use Weka for text mining.">
	<link rel="stylesheet" type="text/css" href="css/reset-min.css" media="all">
	<link rel="stylesheet" type="text/css" href="css/style.css" media="all">
	<link rel="stylesheet" type="text/css" href="css/fancybox/jquery.fancybox-1.2.6.css" media="all">
	<!--[if IE]>
	<link rel="stylesheet" type="text/css" href="css/ie.css" media="all">
	<![endif]-->
	
	<script type="text/javascript" src="js/swfobject.js"></script>
	<script type="text/javascript" src="js/jquery-1.4.min.js"></script>
	<script type="text/javascript" src="js/jquery.fancybox-1.2.6.pack.js"></script>
	<script type="text/javascript" src="js/flowplayer-3.1.4.min.js"></script>
	<script type="text/javascript" src="js/weka.js"></script>
</head>
<body><div class="sentimentcss">
A series  of screencasts .</div>
<div style="float:right;">
  <script type="text/javascript"><!--
google_ad_client = "pub-8152624590362711";
/* 300x250, created 2/12/10 */
google_ad_slot = "9660156087";
google_ad_width = 300;
google_ad_height = 250;
//-->
</script>

<script type="text/javascript"
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>
</div>

<div class="wrapper">
  <h1><a href="index.php">Statistics for Fall 2011</a></h1>
		 Some basic Statistics videos are at <a href="http://www.sentimentmining.net/StatisticsVideos"> www.sentimentmining.net/StatisticsVideos</a>
	<br>
Some videos on the R programming language for Statistical Computing are at <a href="http://sentimentmining.net/StatisticsWithR/"> http://sentimentmining.net/StatisticsWithR/</a>	
		
  <ul id="videos">
			<li id="video-1">
				<font face="Verdana, Geneva, sans-serif" color="#6d6d6d" size="8"></font>
				<div class="details">
					<h2>HOW TO Register at the WileyPlus website</h2>
					<a href="#" class="watch">Watch</a>
					<a href="mp4/RegisterForWileyPlus.mp4" class="download">Download</a>
				</div>
			</li>
			
	<li id="video-2">
				<font face="Verdana, Geneva, sans-serif" color="#6d6d6d" size="8"></font>
				<div class="details">
					<h2>Chapter 2 Statistics Qualitative Frequency Distributions</h2>
					<a href="#" class="watch">Watch</a>
					<a href="mp4/Chapter 2 Statistics Qualitative Frequency Distributions.mp4" class="download">Download</a>
				</div>
			</li>
			<li id="video-3">
				<font face="Verdana, Geneva, sans-serif" color="#6d6d6d" size="8"></font>
				<div class="details">
					<h2>Chapter 2 Stem-and-Leaf  Dotplots Outliers</h2>
					<a href="#" class="watch">Watch</a>
					<a href="mp4/Chapter 2 Stem-and-Leaf  Dotplots Outliers.mp4" class="download">Download</a>
				</div>
			</li>
						<li id="video-3">
				<font face="Verdana, Geneva, sans-serif" color="#6d6d6d" size="8"></font>
				<div class="details">
					<h2>Chapter 2 Uses and Misuses of Graphs</h2>
					<a href="#" class="watch">Watch</a>
					<a href="mp4/Chapter 2 Uses and Misuses of Graphs.mp4" class="download">Download</a>
				</div>
			</li>
						</li>
						<li id="video-3">
				<font face="Verdana, Geneva, sans-serif" color="#6d6d6d" size="8"></font>
				<div class="details">
					<h2>Chapter 3 Box-and-Whisker Plot</h2>
					<a href="#" class="watch">Watch</a>
					<a href="mp4/Chapter 3 Box-and-Whisker Plot.mp4" class="download">Download</a>
				</div>
			</li>
									</li>
						<li id="video-3">
				<font face="Verdana, Geneva, sans-serif" color="#6d6d6d" size="8"></font>
				<div class="details">
					<h2>Chapter 3 Uses and Misuses Unemployment Rates</h2>
					<a href="#" class="watch">Watch</a>
					<a href="mp4/Chapter 3 Uses and Misuses Unemployment Rates.mp4" class="download">Download</a>
				</div>
			</li>
  </ul>
		
</div>			
		
	
</body>
</html>

Open in new window

onyourmarkAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Minh Võ CôngCommented:

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
onyourmarkAuthor Commented:
Hello. Thanks. I need the length in time and seconds for an mp4 file before it is loaded actually to be diplayed on the page so the user will know how long it is and so they can decide before loading it how long it is.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
JavaScript

From novice to tech pro — start learning today.