Force Sharepoint 2013 media webpart to run in silverlight mode

HI

I am using share point 2013 media webpart. The issue is that when I upload mp4 then the player loads html 5 video tag instead of silverlight player.However  for wmv it loads silverlight player.Both of them have different UI so I want that sharepoint 2013 media webpart to use always silverlight mode.I am rendering the webpart through server side as follows

  <PublishingWebControls:MediaWebPart ID="mediaWebpart" runat="server" Height="280"  /> 

Is it feasible to load media webpart in one mode

Thanks