我的flowplayer实例不会渲染字幕，可能是什么问题？ 我的代码：
<object data="http://releases.flowplayer.org/swf/flowplayer-3.2.18.swf" height="320" id="undefined" name="undefined" type="application/x-shockwave-flash" width="554">
<param name="movie" value="http://releases.flowplayer.org/swf/flowplayer-3.2.18.swf" />
<param name="allowfullscreen" value="true" />
<param name="allowscriptaccess" value="always" />
<param name="AutoStart" value="false" />
<param name="flashvars" value='config={"clip":{"autoPlay":false, "baseUrl":"http://stream.flowplayer.org","url":"http://fv1142fgtr.1fichier.com/BBC.Horizon.2011.What.Is.Reality.PDTV.XviD.AC3.MVGroup.org.mp4.mp4","captionUrl":"http://peptqyegyh.1fichier.com/BBC.Horizon.2011.What.Is.Reality.PDTV.XviD.AC3.MVGroup.org.srt"},"playlist":[{"url":"http://fv1142fgtr.1fichier.com/BBC.Horizon.2011.What.Is.Reality.PDTV.XviD.AC3.MVGroup.org.mp4.mp4","baseUrl":"http://stream.flowplayer.org"},{"url":"http://fv1142fgtr.1fichier.com/BBC.Horizon.2011.What.Is.Reality.PDTV.XviD.AC3.MVGroup.org.mp4.mp4","baseUrl":"http://stream.flowplayer.org"}],"canvas":{"backgroundColor":"#112233"},"plugins":{"controls":{"time":false,"volume":false,"fullscreen":false}}}' />
</object>