ehmmmm qualcosa non va.

Per usare il tag interno devi copiare i link tipo:

<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/NsjU66TLDUE&hl=en&fs=1"></param><param name="allowFullScreen" value="true"></param><embed src="http://www.youtube.com/v/NsjU66TLDUE&hl=en&fs=1" type="application/x-shockwave-flash" allowfullscreen="true" width="425" height="344"></embed></object>

al suo interno