The old forum function has stopped working. So I made this neat little guide on how to do it.
Find the Embed bit underneath the comment on the video. Copy it.
HTML Code:
<object width="425" height="344"><param name="movie" value="
http://www.youtube.com/v/E-rPwQiGi3w&hl=en&fs=1"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="
http://www.youtube.com/v/E-rPwQiGi3w&hl=en&fs=1" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object>
Now, I use embed flash to insert the URL in the HTML Code:
[flash=600,400]http://www.youtube.com/v/E-rPwQiGi3w&hl=en&fs=1[/flash]
Which results in:
http://www.youtube.com/v/E-rPwQiGi3w&hl=en&fs=1Make sure you change the tags from the default 200,200.