You have to use the last part of the URL. If you just copy and past the URL of the YouTube video, you get this: https://www.youtube.com/watch?v=VYjjPIsMDlU If you use the [youtube] tag and paste the entire link, it will look like this: [YOUTUBE]www.youtube.com/watch?v=VYjjPIsMDlU[/YOUTUBE] But if you post "VYjjPIsMDlU" in the YouTube tag, you get this: [youtube]VYjjPIsMDlU[/youtube] Hope this helps.