Q: youtube does not stop playing?

Hi,

I'm able to embed the youtube videos through iAd Producer in order to include as a widget that's in iBooks Author. They play on the iPad in iBooks fine. However, when I close the full screen widget without tapping the pause button, the video does not stop playing. The screen will go back to the text of the book but the sound of the video keeps playing until it ends. I have to swipe two pages away for it to end.

Is there a way for it to automatically end when closing the widget?

Thanks!