How do I insert youtube videos in a forum post?

The video button is glitched. It only searches for videos from gamespot. When I try to paste a link from youtube or any other site, it says 'sorry I don't know this service'. When I click the video tab again, the link insertion box is grayed out and soon as I click anywhere on the screen it disappears.

For me it works fine just entering the page URL for the youtube video (e.g. "http://www.youtube.com/watch?v=u33dwH42FVc" without the "s) into the URL for the video you want to embed box and pressing insert. The search I believe is only meant to search for GS videos at this point in time. Ensure that you're using a suitable URL in the box - it doesn't want embed code, it just wants the URL the video appears on.

I still get that "Sorry, I don't know this service error. I was trying to insert this vid as a test to see if it works. Even when I remove the s from https:// I still get the error.

Here is what I pasted into the URL box

http://www.youtube.com/watch?v=KjjXWr9lTJ4

Testing:

Seems to work fine for me...how odd. I seem to get the error when using unsupported sites still so it doesn't seem to be just due to being a mod, though I'm can't be certain. Can you post this via quoting?

Do you use any script blockers, etc? I believe the video feature relies on embedly, and your browser may be preventing it from doing it's part.