Here's what I use in 3.8.4 it might work for you. It also puts a nice frame around it.
<!-- BBCODE -->
<table class="tborder" cellpadding="6" cellspacing="1" border="0" width="400" style="margin:10px 0">
<thead>
<tr>
<td class="tcat" colspan="2">
</td>
</tr>
</thead>
<tr>
<td>
<object width="400" height="225"><param name="allowfullscreen" value="true" /><param name="allowscriptaccess" value="always" /><param name="movie" value="http://vimeo.com/moogaloop.swf?clip_id={param}&server=vimeo.com&sho w_title=1&show_byline=1&show_portrait=0&color=&ful lscreen=1" /><embed src="http://vimeo.com/moogaloop.swf?clip_id={param}&server=vimeo.com&sho w_title=1&show_byline=1&show_portrait=0&color=&ful lscreen=1" type="application/x-shockwave-flash" allowfullscreen="true" allowscriptaccess="always" width="400" height="225"></embed></object>
</td>
</tr>
</table>
<!-- BBCODE -->
Then use code-number-goes-here
Here's a Vimeo button for you. http://img248.imageshack.us/img248/6487/vimeoh.jpg
If that works I can put up codes for LiveLeak, College Humour, Daily Motion, Google Video and Youtube.
All have frames around them but you can remove that if you like.