A lot of people have been wondering how to embed videos in forum posts, and I thought I'd share what I found. I initially had a little trouble with it myself, and in a fit of frustration I decided to
Your first stop trying to get fancy stuff to work with the forum software should be the vB Code List Page which is also linked at the bottom of (most)every forum page.
To show these examples in a way that prevents the forum software from just displaying the videos, I have inserted spaces in the video embedding code; remove all spaces between the first '[' and the last ']'. You can try a reply to this message with quotes to see the active code too. You don't have to post anything, just get this post quoted in a reply box so you can see what's going on.
What goes between the BB tags is whatever part of the URL comes after the '=' sign and before the first ampersand if there is one.
Embed code -> [ g o o g l e ] -7856134727308903072 [ / g o o g l e ]
(I don't know anything about this, but it's listed on the vB Code List Page, so here's the example from the vB Code List page, though I can't get it to work. Maybe one of the mods will step in and either explain this or take down the reference. Either way I'd be happy to update this post with new info.