title: Flutter: VideoPlayerController.asset does not play specified video
body: <p>I am trying to play a video. I have added the necessary permissions.</p>
  <p>I am using Android so I added this after :</p>
  <pre><code>&lt;uses-permission android:name=&quot;android.permission.INTERNET&quot;/&gt;
  </code></pre>
  <p>Pubspec:</p>
  <pre><code>assets:
      - assets/
  </code></pre>
  <p>Code initializing controller:</p>
  <pre><code>_controller = VideoPlayerController.asset(&quot;assets/video_1.mp4&quot;);
  </code></pre>
  <p>When I try with network urls (videos from the internet), it works just fine. I think something is wrong with specifying the video I want.</p>
  <div class="s-table-container">
  <table class="s-table">
  <thead>
  <tr>
  <th>Where I put my video</th>
  <th>What I see on emulator</th>
  </tr>
  </thead>
  <tbody>
  <tr>
  <td><a href="https://i.stack.imgur.com/oXYPk.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/oXYPk.png" alt="enter image description here" /></a></td>
  <td><a href="https://i.stack.imgur.com/bqOtBm.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/bqOtBm.png" alt="enter image description here" /></a></td>
  </tr>
  </tbody>
  </table>
  </div>
  <p>This is the full code: <a href="https://pastebin.com/32BVzBmM" rel="nofollow noreferrer">https://pastebin.com/32BVzBmM</a>. It's copied from the Flutter VideoPlayer documentation example, the only thing changed being the one line above.</p>