can I use the feature active text to change plain youtube urls in postings to be converted to embedded video urls?

the url look like
Code
http://www.youtube.com/watch?v=xxxxxxxxxxx
the code I like tu use is
Code
[video:youtube]xxxxxxxxxxx[/video]

in active text I can set only one string like this:
Code
http://www.youtube.com/watch?v= | [video:youtube]
and cannot place the closing tag because the position of the id (xxxxxxxxxxx) is changed. Can I use placeholder like %s or something else to reach my goal? If yes I dont have to change a lot of postings.

I know, strange idea but if you are tyred while editing lots of old posting this becomes priority laugh

Regards
Zarzal


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