下面的代码 win7 ie9 播放 swf 是ok的

 <object width="1230" height="1000"
                        type="video/x-ms-asf" url="videofilename.wmv" data="videofilename.wmv"
                        classid="CLSID:6BF52A52-394A-11d3-B153-00C04F79FAA6">
                    <param name="url" value="videofilename.wmv">
                    <param name="filename" value="videofilename.wmv">
                    <param name="autostart" value="1">
                    <param name="uiMode" value="full">
                    <param name="autosize" value="1">
                    <param name="playcount" value="1">
                    <embed type="application/x-mplayer2" src="videofilename.wmv" width="1230" height="1000"
                           autostart="false" showcontrols="true"
                           pluginspage="http://www.microsoft.com/Windows/MediaPlayer/"></embed>
                </object>