How to post a video

I guess this is pretty basic, but...

When I want to post one of my videos (or someone else's for that matter) all I know how to do is embed a link to it into a piece of text, unlike everyone else who has a big preview window that will play on the page and also link to it on youtube or wherever the vid is hosted.
What am I missing? It's pretty hard to entice a viewer when all they can see is some live text.

When you reply to my post below this one, look to the left at all the posting options

<---
<---
<--- Bold, Italic, Quote tools, etc.

Click on MORE Tools & COMMANDS.
Near the bottom you will find [VIDEO]

Thanks, guys!