title: Getting video information from MediaInfo
body: <p>To get the dimensions of a file, I can do:</p>
  
  <pre><code>$ mediainfo '--Inform=Video;%Width%x%Height%' ~/Desktop/lawandorder.mov
  1920x1080
  </code></pre>
  
  <p>However, if I give a url instead of a file, it returns None:</p>
  
  <pre><code>$ mediainfo '--Inform=Url;%Width%x%Height%' 'http://url/lawandorder.mov'
  (none)
  </code></pre>
  
  <p>How would I correctly pass a url to <code>MediaInfo</code>?</p>