Thread:Eladkse/@comment-5786897-20121204115931/@comment-3030984-20121204120207

See Help:Video Embed Tool.

While editing a page, click 'Video' in the right-hand toolbar. A popup will appear, allowing you to input the URL of the YouTube video you want. After clicking 'Add', you will be able to customise how the video appears on the page.

Hope this helps!