title: MATLAB: Unable to initialize the video obtain properties
body: <p>I want to use VideoReader() in MATLAB 2017b on Ubuntu 16.04. While trying to use this function I get to this error:</p>
  
  <pre><code>&gt;&gt; obj= VideoReader('video.mp4');
  Error using VideoReader/init (line 619)
  Could not read file due to an unexpected error. Reason: Unable to initialize the video obtain properties
  
  Error in VideoReader (line 172)
              obj.init(fileName);
  </code></pre>
  
  <p>Can anyone help me with this problem?</p>
  
  <p>Thanks</p>