title: video tag play mp4 in Safari on Mac-book
body: <p>I have a mp4 file stored in different sites,
  1. when the url is "<a href="http://www.w3school.com.cn/i/movie.mp4" rel="nofollow">http://www.w3school.com.cn/i/movie.mp4</a>", safari can play it.</p>
  
  <pre><code>&lt;video autoplay="autoplay"&gt;
      &lt;source src="http://www.w3school.com.cn/i/movie.mp4" type="video/mp4"&gt;
  &lt;/video&gt;
  </code></pre>
  
  <p>2. when the url is "<a href="http://120.26.108.71/resources/movie.mp4" rel="nofollow">http://120.26.108.71/resources/movie.mp4</a>", safari cannot play it.</p>
  
  <pre><code>&lt;video autoplay="autoplay"&gt;
      &lt;source src="http://120.26.108.71/resources/movie.mp4" type="video/mp4"&gt;
  &lt;/video&gt;
  </code></pre>
  
  <p>Appreciate any help!</p>