MP4

<object classid="clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B" codebase="http://www.apple.com/qtactivex/qtplugin.cab" width="320" HEIGHT="256" >
 <param name="src" value="media/Step1.mp4">
 <param name="autoplay" value="false">
 <param name="controller" value="true">
 <embed src="media/Step1.mp4" type="image/x-macpaint" pluginspage="http://www.apple.com/quicktime/download" width="320" height="256" autoplay="true">
 </embed>
</object>

If the above mp4 plays automatically, it's the EMBED tag that's working, not the OBJECT

AVI

<object data="media/Step1.avi" type="video/x-msvideo" width="320" height="256">
  <param name="src" value="media/Step1.avi">
  <param name="autoStart" value="0">
  
</object>

WMV

<object type="video/x-ms-wmv" data="media/Step1.wmv" width="320" height="256">
  <param name="src" value="media/Step1.wmv" />
  <param name="controller" value="true" />
  <param name="autostart" value="0" />
</object>

WMV for IE

<object classid="CLSID:6BF52A52-394A-11d3-B153-00C04F79FAA6" id="player" width="320" height="256">
  <param name="url" value="media/Step1.wmv" />
  <param name="src" value="media/Step1.wmv" />
  <param name="showcontrols" value="true" />
  <param name="autostart" value="false" />
  <!--[if !IE]>-->
  <object type="video/x-ms-wmv" data="Step1.wmv" width="320" height="256">
    <param name="src" value="media/Step1.wmv" />
    <param name="controller" value="true" />
    <param name="autostart" value="0" />
  </object>
  <!--<![endif]-->
</object>

MOV for IE

<object classid="clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B" codebase="http://www.apple.com/qtactivex/qtplugin.cab" width="320" height="260">
  <param name="src" value="media/Step1.mov" />
  <param name="pluginspage" value="http://www.apple.com/quicktime/download/" />
  <param name="controller" value="true" />
  <param name="autoplay" value="false" />
  <!--[if !IE]>-->
  <object type="video/quicktime" data="media/Step1.mov" width="320" height="256">
    <param name="pluginurl" value="http://www.apple.com/quicktime/download/" />
    <param name="controller" value="true" />
    <param name="autoplay" value="false" />
  </object>
  <!--<![endif]-->
</object>

WMV universal?

<object type="video/x-ms-wmv" data="media/Step1.wmv" width="320" height="256">
  <param name="src" value="media/Step1.wmv" />
  <param name="autostart" value="true" />
  <param name="controller" value="true" />
</object>

MOV universal?

<object classid="clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B" codebase="http://www.apple.com/qtactivex/qtplugin.cab" width="320" height="260">
  <param name="src" value="media/Step1.mov" />
  <param name="controller" value="true" />
  <param name="autoplay" value="false" />
  <!--[if !IE]>-->
  <object type="video/quicktime" data="media/Step1.mov" width="320" height="256">
    <param name="autoplay" value="false" />
    <param name="controller" value="true" />
  </object>
  <!--<![endif]-->
</object>