The <video> Element

HTML
<video poster="./images/duckett-puppy-poster.png" width="768" height="576" preload controls loop>
  <source src="./media/ducket-puppy.mp4" type='video/mp4;codecs="avc1.42E01E, mp4a.40.2"' />
  <source src="./media/duckett-puppy.webm" type='video/webm;codecs="vp8, vorbis"' />
  <p>A video of a puppy playing in the snow.</p>
  <p>Sorry, your browser doesn't support embedded videos, but don't worry, you can <a href="./media/duckett-puppy.webm">download it</a> and watch it with your favorite video player!</p>
</video>