See the red circle i made, the embedded link will put the video into the post, the url link will make a link you have to click on which will take you to the site,
Embedded link:
<object width="425" height="350"><param name="movie" value="http://www.youtube.com/v/cBeGFjadpdc"></param><param name="wmode" value="transparent"></param><embed src="http://www.youtube.com/v/cBeGFjadpdc" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"></embed></object>
URL Link:
http://www.youtube.com/watch?v=cBeGFjadpdc