theirf, body of my html 5 document where the html 5 video not woking

<body>
        <!--<video src="introHD.mov" controls="controls" autoplay="autoplay">
            Please upgrade your browser to meet the latest standards of the web
        </video>
    <div>
        <ul>
            <li style="float:left;"><a href="/index.php" />Skip the Intro</a></li>
            <li style="float:right; padding-right:42px;"><a href="/movies.php" />Download this video</a></li>
        </ul>
    </div>

    <video controls="controls" autoplay="autoplay">
   <source src=introHD.mov.ogv type=’video/ogg; codecs="theora, vorbis"’>
   <source src="introHD.mov" type=’video/mp4; codecs="avc1.42E01E, mp4a.40.2"’>
   <embed src="http://www.youtube.com/watch?v=_jJHZhOAumQ" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344">
   If you are seeing this then it means that the browser you are using does not support .mov, .ogv, or flash.
   In other words, your browsers is either an extremley outdated. <a href="http://www.quirksmode.org/upgrade.html">Please upgrade</a><br/> Or consider <a href="/movies.php" />downloading the video.</a></p>
</video>-->

<video controls>
   <source src=introHD.ogv type=’video/ogg; codecs="theora, vorbis"’>
   <source src=introHD.mov type=’video/mp4; codecs="avc1.42E01E, mp4a.40.2"’>
   <embed src="http://www.youtube.com/watch?v=_jJHZhOAumQ" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344">
</video>
</body>