If you get the message below on your mobile device, it's because the video likely includes a copyrighted soundtrack.
"The content owner has not made this video available on mobile. Add to playlist to watch it later on a PC"
I found that embedding the video on a webpage with an iframe currently bypasses that restriction. I created a page that will embed the video for you. Just submit a youtube url and it will embed it for you.
http://www.snowtrek.org/ytembed.php
How to watch restricted YouTube videos on mobile devices
How to watch restricted YouTube videos on mobile devices
WINTER IS HERE