Thread:Octometaknight/@comment-5498154-20150801043949/@comment-25876622-20150809042513

The MediaWiki:YTPlayer correctly creates a black rectangle. Ergo, the " " tag is working: The text inside these tags are treated as HTML code, creating an " ". (YTPlayer uses the MediaWiki pages "YT1", "YT2", "YT3", "YT4", "YT5".)

The Template:MPC simply uses YTPlayer. However, it does not create a black rectangle, but consists only of text. Hence, " " is not working outside of MediaWiki: The text inside these tags are not treated as HTML code, only as text.

This is not entirely unexpected - having access to the " " tag, whether inside a template or not, would allow any user to insert HTML code into any page. I do not wish to have to deal with vandals using HTML.

Maybe I'm wrong. If you have a different theory, feel free to make some suggestions as how to fix it.