title: .mp4 video doesn't work on my web page
body: <p>I tried to add a .mp4 video on my web page. And it doesn't work, I got an error in firebug. Bellow is the code:</p>
  
  <pre><code>&lt;video width="320" height="240" controls&gt;
      &lt;source type="video/mp4" src="08.mp4" &gt;
  &lt;/video&gt;
  </code></pre>
  
  <p>Error: </p>
  
  <pre><code>"NetworkError: 404 Not Found - http://localhost/08.mp4"
  HTTP load failed with status 404. Load of media resource http://localhost/08.mp4 failed.
  All candidate resources failed to load. Media load paused.
  </code></pre>
  
  <p>I tried with a .m4v video, and it works fine:</p>
  
  <pre><code>&lt;video width="320" height="240" controls&gt;
      &lt;source type="video/mp4" src="Big_Buck_Bunny_Trailer.m4v" &gt;
  &lt;/video&gt;
  </code></pre>
  
  <p>If I tried to access <a href="http://localhost/08.mp4" rel="nofollow noreferrer">http://localhost/08.mp4</a> I got the following:</p>
  
  <pre><code>A 404 error occurred
  Page not found.
  
  The requested URL could not be matched by routing.
  No Exception available
  </code></pre>
  
  <p>Both videos are in the same folder.
  Codec information: <a href="https://i.stack.imgur.com/QKMDf.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/QKMDf.jpg" alt="enter image description here"></a>
  Can you tell me please where is the problem?</p>