title: OSX - WebView youtube html5 video getting error
body: <p>I am loading an embedded youtube video into a WebView forcing html5.</p>
  
  <pre><code>[webView setMainFrameURL:[NSString stringWithFormat:@"https://www.youtube.com/embed/%@?html5=1",videoId]];
  </code></pre>
  
  <p>It works well until i click play and wait some time i get a strange error in the Logs</p>
  
  <pre><code>fragManifold_PushBytes signalled err=-16046 (kFigManifoldError_UnexpectedInitData) (Second 'ftyp' atom encountered) at /SourceCache/CoreMedia/CoreMedia-1562.232/Prototypes/FormatHandlers/Movie/FigMovieFragmentManifold.c line 1630
  </code></pre>
  
  <p>And the video stops playing. Only way to resume playing is to jump in the timeline at an other point in the video.</p>
  
  <p>I couldn't find anything about this error. Any help ?</p>