Metti il filmato in una tabella del tipo:

codice:
<html>
<head>
<title></title>
</head>
<body>
<table width="100%" height="100%" border="0" cellpadding="0" cellspacing="0">
  <tr>
    <td align="center" valign="middle"><object ... </object></td>
  </tr>
</table>
</body>
</html>