title: Html video is black on android chrome
body: <p>My html videos are just black boxes on chrome 4.2 for android.</p>
  
  <p>This is my code:</p>
  
  <pre><code>&lt;video loop autoplay&gt;
          &lt;source src="url-to-image.webm" type="video/webm"&gt;
          &lt;source src="url-to-image.mp4" type="video/mp4"&gt;
  &lt;/video&gt;
  </code></pre>
  
  <p>It works fine on:</p>
  
  <ul>
  <li>Chrome: desktop and iOS </li>
  <li>Firefox: desktop, iOS, Android</li>
  <li>Safari desktop, iOS</li>
  </ul>
  
  <p>The only browser it doesn't work is chrome for android.</p>
  
  <p>I have also tried to play the video with javascript (video.play()).
  If I long-tap on the video, chrome suggests 'save video'.
  I am using apache to serve the files.</p>
  
  <p>Any idea? what that can be?</p>
  
  <p><a href="https://i.stack.imgur.com/3nG8r.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/3nG8r.png" alt="enter image description here"></a></p>