Well, yes, Little Asterisk (thanks for interrupting

),
your advice is quite useful, I contacted support of the makers of Coffeecup (my HTML Editor), and it looks like they themselves are not really familiar with HTML5 themselves.
However, they referred me to a similar site as the one you got the code from (or maybe the same one, would have to check), and I used that code to make my video work.
Strangely enough, when I looked back at the support ticket this morning, I go to their own link, and it looks like they have changed the code or something, because it is not working properly anymore, which it did yesterday.
The best one is, evrything works in Firefox (have not tried other browsers yet, apart from IE8), but Internet Explorer won't have it, I have to click on the "Download" links to see the film.
It sends me straight to the Flash version, which at the moment is not working, probably because of an error in my script (no expert on Flash).
You can have a look at the test page here: http://www.vlaanderen-flanders.org.uk/videotest.htm
Mind you: I use Firefox, and it works perfectly in it.
Finally, here is the code I used to make it work:
[quote]<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="generator" content="CoffeeCup HTML Editor (www.coffeecup.com)">
<meta name="created" content="Wed, 07 Jul 2010 10:27:51 GMT">
<meta name="description" content="">
<meta name="keywords" content="">
<title>Videotest</title>
<style type="text/css">
<!--
body {
color:#000000;
background-color:#FFFFFF;
}
a { color:#0000FF; }
a:visited { color:#800080; }
a:hover { color:#008000; }
a:active { color:#FF0000; }
-->
</style>
<!--[if IE]>
<script src="http://html5shim.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
</head>
<body>
<!-- "Video For Everybody" v0.4.1 by Kroc Camen of Camen Design <camendesign.com/code/video_for_everybody>
=================================================================================================================== -->
<!-- first try HTML5 playback: if serving as XML, expand `controls` to `controls="controls"` and autoplay likewise -->
<!-- warning: playback does not work on iPad/iPhone if you include the poster attribute! fix coming from Apple in OS4.0 -->
<video width="640" height="360" controls preload="none">
<!-- MP4 must be first for iPad! -->
<source src="SV_A0010.mp4" type="video/mp4" /><!-- WebKit video -->
<source src="SV_A0010.ogg" type="video/ogg" /><!-- Firefox / Opera -->
<!-- fallback to Flash: -->
<object width="640" height="384" type="application/x-shockwave-flash" data="flowplayer-3.1.5.swf">
<!-- Firefox uses the `data` attribute above, IE/Safari uses the param below -->
<param name="movie" value="flowplayer-3.1.5.swf" />
<param name="flashvars" value="image=Pics/vl_leeuw.jpg&file=SV_A0010.mp4" />
<!-- fallback image. note the title field below, put the title of the video there -->
<img src="Pics/vl_leeuw.jpg" width="640" height="360" alt="*BLEEP*"
title="No video playback capabilities, please download the video below" />
</object>
</video>
<!-- you *must* offer a download link as they may be able to play the file locally. customise this bit all you want -->
<p> <strong>Download Video:</strong>
Closed Format: <a href="SV_A0010.mp4">"MP4"</a>
Open Format: <a href="SV_A0010.ogg">"OGG"</a>
</p>
</body>
</html>[/quote]
Like I said, the only thing not workingis the Flash version, a bit difficult for me to grasp without a full example.