Lemme fix that for you <iframe width="420" height="345" src="http://www.youtube.com/embed/oCkH4TL_8fk" frameborder="0" allowfullscreen></iframe>
<iframe width="560" height="345" src="http://www.youtube.com/embed/aMNuynflyts" frameborder="0" allowfullscreen></iframe>