A client who owns the message board at http://www.electrofreaks.com/ wanted to allow his users to embed youtube videos within their messages. Currently people are able to link to youtube videos, but are not able to embed videos within their posts.
Within phpBB3 there is a feature which allows you to create custom BBCodes. This means that it is possible to embed anything into your phpBB3 message board, so long as embedding is supported on the site which contains the content you wish to embed. Here are the steps:-