title: Start a YouTube video when website opens
body: <p>I'd like for a YouTube video to start playing right away with the sound muted when a user opens my webpage, but when embedding it from YouTube the user has to click on it and click "play" in order for the video to start playing.</p>
  
  <p>Right now I get a code like this from YouTube:</p>
  
  <pre><code>&lt;iframe width="560" height="315" src="https://www.youtube.com/embed/M0NXSdLlaZ4" frameborder="0" allowfullscreen&gt;&lt;/iframe&gt;
  </code></pre>
  
  <p>And I'm not sure how to get the YouTube video to start playing as soon as the user opens the website.</p>