title: Recently not playing youtube clip with iframe player on UIWebView
body: <p>My iOS application uses youtube iframe player on UIWebView to play any clip with inline mode. The following code is HTML code used. </p>
  
  <pre><code>&lt;html&gt;
  &lt;head&gt;
       &lt;style type="text/css"&gt;body {background-color: transparent;color: white;}&lt;/style&gt;
  &lt;/head&gt;
   &lt;body style="margin:0"&gt;
  &lt;iframe src="http://www.youtube.com/embed/e2w8z6mI47U?playsinline=1&amp;rel=0&amp;showinfo=0" width="320" height="240" frameborder="0" allowfullscreen&gt;&lt;/iframe&gt;
  &lt;/body&gt;
   &lt;/html&gt;
  </code></pre>
  
  <p>Then, it is passed to <code>loadHTMLString</code> method.</p>
  
  <p>That code had worked well until a recent date. But, I recently noticed that every clips I used aren't played normally. the standby view and play button is shown but, although I pushed the play button, it didn't play well. black screen was only shown.  </p>
  
  <p>I haven't found anything to solve the problem. Are there any changes of Youtube Iframe player or points I missed?</p>