title: NotReadableError: Could not start source
body: <p>I have added this piece of code in my project</p>
  
  <pre><code>if (navigator.mediaDevices === undefined) {
    navigator.mediaDevices = {};
  }
  
  if (navigator.mediaDevices.getUserMedia === undefined) {
    navigator.mediaDevices.getUserMedia = function (constraints) {
  
      var getUserMedia = (
        navigator.getUserMedia ||
        navigator.webkitGetUserMedia ||
        navigator.mozGetUserMedia
      );
  
      if (!getUserMedia) {
        return Promise.reject(new Error('getUserMedia is not implemented in this browser'));
      }
  
      return new Promise(function (resolve, reject) {
        getUserMedia.call(navigator, constraints, resolve, reject);
      });
  
    };
  }
  </code></pre>
  
  <p>Then I'm trying to access a video stream using <code>getUserMedia</code></p>
  
  <pre><code>navigator.mediaDevices.getUserMedia({
      video: true,
      audio: false
  }).then(stream =&gt; {
      // do stuff
  }).catch(error =&gt; {
      console.log(error.name + " " + error.message);
  });
  </code></pre>
  
  <p>When I test this in my emulators it works on android versions 5 and up, however when I run it on an actual device I get this error</p>
  
  <blockquote>
    <p>NotReadableError Could not start source</p>
  </blockquote>
  
  <p>I have added the <code>cordova-plugin-media-capture</code> plugin to make sure my app will request the appropriate permissions, however I don't want to use the plugin I'd rather use the <code>getUserMedia</code> API.</p>
  
  <p>So far my researches show that the reason for this error is that some other app is already using the camera but that's not the case, I even went a step further and restarted the device, then opened my app, making sure there are no other running apps and I still got the error.</p>
  
  <p>Has anyone had this issue?</p>