youtube got rid of the "old embed code" option
but you can still use it with copypasta
just replace the x's (in both places or it won't work) with the 11 digit youtube ID
PHP Code:
<object width="560" height="315"><param name="movie" value="http://www.youtube.com/v/xxxxxxxxxxx? version=3%amp;hl=en_US"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/xxxxxxxxxxx? version=3&hl=en_US" type="application/x-shockwave-flash" width="560" height="315" allowscriptaccess="always" allowfullscreen="true"></embed></object>