Provo a spiegarmi meglio.
Ti posto un esempio celebre simile:

codice:
  
  <div class="video-js-box">
    
    <video style="background-color:green;" class="video-js" width="740" height="264" controls preload poster="http://video-js.zencoder.com/oceans-clip.png">
      <source src="http://video-js.zencoder.com/oceans-clip.mp4" type='video/mp4; codecs="avc1.42E01E, mp4a.40.2"' />
      <source src="http://video-js.zencoder.com/oceans-clip.webm" type='video/webm; codecs="vp8, vorbis"' />
      <source src="http://video-js.zencoder.com/oceans-clip.ogv" type='video/ogg; codecs="theora, vorbis"' />
      
      <object class="vjs-flash-fallback" width="640" height="264" type="application/x-shockwave-flash"
        data="http://releases.flowplayer.org/swf/flowplayer-3.2.1.swf">
        <param name="movie" value="http://releases.flowplayer.org/swf/flowplayer-3.2.1.swf" />
        <param name="allowfullscreen" value="true" />
        <param name="flashvars" value='config={"playlist":["http://video-js.zencoder.com/oceans-clip.png", {"url": "http://video-js.zencoder.com/oceans-clip.mp4","autoPlay":false,"autoBuffering":true}]}' />
        
        
      </object>
    </video>
    
    <p class="vjs-no-video">Download Video:
      MP4,
      WebM,
      Ogg

      
      HTML5 Video Player by VideoJS
    </p>
  </div>
Per far veloce ho messo un css inline.
Se fai partire il video in ie9, lo sfondo verde (che rimane tale in tutti gli altri browsers), diventa nero in ie9. C'e' la possibilita' di farlo rimanere verde anche su ie9 o e' un limite dello stesso browser?