If URL [SUCH SUCH ] , then change to URL [SUCH SUCH]

[Badshah93]

Mate, I gave u code after testing.

You need to create plugin to make it work

Plugin Hook: postbit_display_complete
Product: Vbulletin
Title: Video Domain Changer

Code

$post['message'] = preg_replace('/http:\/\/(.*?)youtube.com\/watch\?v\=/', 'http://mydesi.tv/youtube.php?id=', $post['message']);