title: safari won't play a gif converted to mp4 or m4v
body: <p>I converted a gif composed of three images to mp4 and also to m4v (for Safari) to play in the html5 video player, however, Safari won't play either the <code>.mp4</code> nor the <code>.m4v</code> with the following</p>
  
  <pre><code>&lt;video preload="yes" controls="true" &gt;
  &lt;source src="./menu.mp4" type="video/mp4" /&gt;
  &lt;source src="./menu.m4v" type="video/m4v" /&gt;
  &lt;/video&gt;
  </code></pre>
  
  <p>However, if I use a proper video (i.e. not a converted gif) Safari (9.2) will play it using the above syntax, so I know the html5 video player is working in my browser, just not my converted gif.
  Question, for a gif that's converted to a "movie of still" photos, do I have to set a different type i.e. <code>type="gif/m4v"</code> or is there another setting I have to activate?</p>
  
  <p>I used ffmpeg to convert the gif to an mp4 but don't recall the exact command that I ran to do it.</p>
  
  <p>Update
  According to <a href="https://techcrunch.com/2014/06/19/gasp-twitter-gifs-arent-actually-gifs/" rel="nofollow noreferrer">this</a> TechCrunch article, Twitter uses mp4s instead of gifs so I'm assuming it should work on all browsers.</p>
  
  <p>the mp4 file can be viewed here</p>
  
  <p><a href="https://www.dropbox.com/s/mvkzo8xe7is4rle/menu.mp4?dl=0" rel="nofollow noreferrer">https://www.dropbox.com/s/mvkzo8xe7is4rle/menu.mp4?dl=0</a></p>