title: HTML5 <video> can play .mkv files?
body: <p>So I accidentally opened an mkv video file with Chrome, and to my surprise it played it using the native player:</p>
  
  <pre><code>&lt;video src="video.mkv"&gt;&lt;/video&gt;
  </code></pre>
  
  <p>It was playing perfectly. HTML5 video supports matroska container?</p>