Flynn has provided the answer. There are two changes to the YouTube post you need to make
<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" width="320" height="265" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,40,0">
<param name="allowFullScreen" value="true" /><param name="allowscriptaccess" value="always" />
<param name="src" value="http://www.youtube.com/v/Hgilf4FTGAY&hl=en&fs=1&rel=0&color 1=0xe1600f&color2=0xfebd01" />
<param name="allowfullscreen" value="true" />
<param name="wmode" value="opaque">
<embed type="application/x-shockwave-flash" width="320" height="265"
wmode="opaque" src="http://www.youtube.com/v/Hgilf4FTGAY&hl=en&fs=1&rel=0&color 1=0xe1600f&color2=0xfebd01" allowscriptaccess="always" allowfullscreen="true">
</embed></object>
add the parts in red to your post and give it a shot