Rounded corners on a video-element

HTML

<video autobuffer autoloop loop controls>
    <source src="http://grochtdreis.de/fuer-jsfiddle/video/big_buck_bunny_trailer_400p.ogg">
  <source src="http://grochtdreis.de/fuer-jsfiddle/video/big_buck_bunny_trailer_480p.mov">
  <source src="http://grochtdreis.de/fuer-jsfiddle/video/sintel_trailer-480.mp4">
</video>

CSS

body{padding: 40px;}
video{
    width: 400px;
    -moz-border-radius: 30px; 
    -webkit-border-radius: 30px; 
    border-radius: 30px; 
    background: #a20000;
    }