Youtube changed the way its videos need to be embedded within an iFrame so if you try and link to the standard share link, the iFrame will show a blank white background.

By following the directions on this article to create links , just use this format in your link destination and choose a Link Target of iFrame popup:

• http://www.youtube.com/embed/iOuekT2QaVQ

• DONT USE: http://youtu.be/iOuekT2QaVQ  OR http://www.youtube.com/watch?v=iOuekT2QaVQ

 If you want your video to auto play, just add this to the end of your link:

• ?version=3&hl=en_US&autoplay=1

 If you don't want related videos to show after your video has completed playing, just append the below to the end of your link:

• ?rel=0

The behavior would be similar to the following page where you click on a link and the video opens up in an iFrame popup.

http://www.epageflip.net/issue/44423