Posting up videos

I'm the owner of a site and it appears I'm the only one incapable of posting up videos. Everybody else can but when I try it just leaves a big blank area in my post where the video should be. If I get somebody else to click edit and then send straight away on my posts it works, so it isn't a coding issue.

What am I doing wrong?

Bump? D:

What code do you use?

Regardless of what code I use, it doesn't work. :X

Would you still like me to provide examples?

If you posted the code, Would have been easier for me to understand what could be the problem you faced.
You could use such a code.

Code:

[flash(425,350)]http://youtube.com/v/awxHun9RQ_4[/flash]

If I can now provide you with a link to an example of it not working?

http://www.ultimateshinobi.org/t5003p200-real-life-pictures#61167

It's just blank.

What code did you enter in the message?

The one Sanket provided.

EDIT: I just got somebody else to edit my post and hit send without changing the code and now it works. It doesn't appear to do a coding issue.

I think I've just fixed it, thanks for your help guys.

-Solved.