mp4或者在flv 在ipad2 上面的浏览器无法播放问题

我做的个网页，在ipad2 上面看，也就是打开苹果浏览器，网页播放的mp4  
  我用电脑看，和电脑上面装的苹果浏览器都可以看，为什么在ipad2上面看不了，上面也不提示下面是播放代码<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" width="100%" height="750px"                        id="pl" align="middle">                        <param name="movie" value="pl.swf" />                        <param name="allowfullscreen" value="true" />                        <param name="allowscriptaccess" value="always" />                        <param name="flashvars" value="file=/StudyMaterials/2012032803504711111.mp4&controlbar='none'" />                        <embed type="application/x-shockwave-flash" id="player2" name="player2" src="pl.swf"                            width="100%" height="730px" allowscriptaccess="always" allowfullscreen="true" flashvars="file=/StudyMaterials/2012032803504711111.mp4&controlbar='none'" />                    </object>p1.swf是播放视频的        /StudyMaterials/2012032803504711111.mp4  存放的地址