AYSO Wiki:Use YouTube Template
From AYSO Wiki
The AYSO Wiki has the ability to embed a YouTube video into a page instead of just having a link to it. Here are instructions:
1. Start on the page you want to add it to. In this case, there is a page that has a link to a video that needs to be converted.
2. From the Visual Editor, use the Insert Menu in the upper right to insert a template
3. In the Add A Template menu, start typing "YouTube", it will autocomplete with a pop-up. Click on the AutoComplete
4. It will now prompt you for the YouTube URL
5. After you click Insert, the Visual Editor will show some code on the side of the page. This is normal.
6. Click on "Save Changes..." and you will now have an embedded video