avi播放的问题？

[quweiie]

<object id="video" width="400" height="200" border="0" classid="clsid:CFCDAA03-8BE4-11cf-B84B-0020AFBBCCFA">
<param name="ShowDisplay" value="0">
<param name="ShowControls" value="1">
<param name="AutoStart" value="1">
<param name="AutoRewind" value="0">
<param name="PlayCount" value="0">
<param name="Appearance value="0 value=""">
<param name="BorderStyle value="0 value=""">
<param name="MovieWindowHeight" value="240">
<param name="MovieWindowWidth" value="320">
<param name="FileName" value="UploadFile/200991615243921682.avi">
<embed width="400" height="200" border="0" showdisplay="0" showcontrols="1" autostart="1" autorewind="0" playcount="0" moviewindowheight="240" moviewindowwidth="320" filename="UploadFile/200991615243921682.avi" src="http://ceshi.cedian.net/lwkj/<%=rs("video")%>">
</embed>
</object>

为何只播放，没视频，没声音，请大家帮忙！