For Youtube videos, try this:

Quote Originally Posted by HigoChumbo
For instance, for this youtube link: https://www.youtube.com/watch?v=dQw4w9WgXcQ just pick everything after the "v=" and paste it between the [youtube] command like this:


For other formats, if they are supported, you can use the Insert Video button in your post toolbar (on top of the reply box). I believe that option requires the full url of the video, and does not work with Youtube.