Edit in JSFiddle

<p>Brilliant Blue</p>
<video src="http://webcreatorbox.com/sample/images/jewellery.mov" autoplay loop>
  <img src="http://webcreatorbox.com/sample/images/jewellery.jpg" alt="Placeholder">
</video>
body {
  background: #000;
}
video {
  position: fixed;
  right: 0;
  top: 0;
  z-index: 1;
}
p {
  font-family: serif;          
  color: #fff;
  font-size: 400%;
  margin: 50px;
  position: relative;
  z-index: 2;
}