this has always worked for me. Are your video denotation tags correct? Have you tested
without the tags to see if your css is fucked up?
<video autoplay controls preload="auto" width="600" height="335" name="myvideo" id="myvideo">
<source src="yourvideo.mp4" type="video/mp4" />
<source src="yourvideo.m4v" type="video/mp4" />
<source src="yourvideo.ogv" type="video/ogg" />
<source src="yourvideo.webm" type="video/webm" />
*Your web browser does not support HTML5 video*
</video><
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