<iframe width="560" height="315" src="//www.youtube.com/embed/qkNQcz-F5KY?rel=0" frameborder="0" allowfullscreen></iframe>
Еще на тему
<iframe width="560" height="315" src="//www.youtube.com/embed/qkNQcz-F5KY?rel=0" frameborder="0" allowfullscreen></iframe>