Hello,
I've found another code to use in mpeg.html.
It works for me in IE and Firefox.
<!-- Template file for MPEG Movies -->
<OBJECT ID="ActiveMovie1" WIDTH="400" HEIGHT="300" CLASSID="CLSID:22D6F312-B0F6-11D0-94AB-0080C74C7E95">
<PARAM NAME="Filename" VALUE="{media_src}">
<PARAM NAME="Appearance" VALUE="0">
<PARAM NAME="AutoStart" VALUE="-1">
<PARAM NAME="AllowChangeDisplayMode" VALUE="0">
<PARAM NAME="AllowHideDisplay" VALUE="0">
<PARAM NAME="AllowHideControls" VALUE="-1">
<PARAM NAME="AutoRewind" VALUE="0">
<PARAM NAME="Balance" VALUE="0">
<PARAM NAME="CurrentPosition" VALUE="0">
<PARAM NAME="DisplayBackColor" VALUE="0">
<PARAM NAME="DisplayForeColor" VALUE="16777215">
<PARAM NAME="DisplayMode" VALUE="0">
<PARAM NAME="Enabled" VALUE="-1">
<PARAM NAME="EnableContextMenu" VALUE="0">
<PARAM NAME="EnablePositionControls" VALUE="0">
<PARAM NAME="EnableSelectionControls" VALUE="0">
<PARAM NAME="EnableTracker" VALUE="0">
<PARAM NAME="FullScreenMode" VALUE="0">
<PARAM NAME="MovieWindowSize" VALUE="0">
<PARAM NAME="PlayCount" VALUE="10">
<PARAM NAME="Rate" VALUE="1">
<PARAM NAME="SelectionStart" VALUE="-1">
<PARAM NAME="SelectionEnd" VALUE="-1">
<PARAM NAME="ShowControls" VALUE="1">
<PARAM NAME="ShowDisplay" VALUE="0">
<PARAM NAME="ShowPositionControls" VALUE="0">
<PARAM NAME="ShowTracker" VALUE="0">
<PARAM NAME="Volume" VALUE="0"></object>
<br />