There are more versions of the mobile link as well as the extended bits.
Can the extended bits work if it was posted via a playlist for example. The extended bit that is not needed is from the "&" and anything beyond that is never needed (marked in red as an example.
[youtubeaudio]https://www.youtube.com/watch?v=yZQqgeF5-U8&feature=youtu.be[/youtubeaudio]
[youtube]http://youtu.be/yZQqgeF5-U8[/youtube]
For the above to work, I've had to use this:
[youtubeaudio]https://www.youtube.com/watch?v=yZQqgeF5-U8[/youtubeaudio]
If anyone posts a video, they should remove the bits including and after &

