怎样在网页播放视频

请教各位高手,我想用以下代码播放.wmv视频,但都不能播放.原因何在呢?
<object id="NSPlay" width=200 height=180 classid="CLSID:22d6f312-b0f6-11d0-94ab-0080c74c7e95" codebase="http://activex.
/nsmp2inf.cab#Version=6,4,5,715" standby="Loading Microsoft Windows Media Player components..." type="application/x-oleobject" align="right" hspace="5">
<param name="AutoRewind" value=1>
<param name="FileName" value="/456.wmv">
<param name="ShowControls" value="1">
<param name="ShowPositionControls" value="0">
<param name="ShowAudioControls" value="1">
<param name="ShowTracker" value="0">
<param name="ShowDisplay" value="0">
<param name="ShowStatusBar" value="0">
<param name="ShowGotoBar" value="0">
<param name="ShowCaptioning" value="0">
<param name="AutoStart" value=1>
<param name="Volume" value="-2500">
<param name="AnimationAtStart" value="0">
<param name="TransparentAtStart" value="0">
<param name="AllowChangeDisplaySize" value="0">
<param name="AllowScan" value="0">
<param name="EnableContextMenu" value="0">
<param name="ClickToPlay" value="0">
</object>