Youtube – Why are some videos not available in mobile

The issue with the first example is that you are not going straight to the video. Instead of watching as part of a playlist, view the video only: http://youtu.be/KqnB2Ew0SFM

This is the full URL: http://www.youtube.com/watch?v=KqnB2Ew0SFM Now you'll get all the features supported by HTML5.

While uploading videos, the author has an option to enable viewing on mobile platforms. If the author's prevented viewing on mobile platforms, then you'll see this error message.

The error message also comes if the video contains some copyrighted media and the copyright holder has decided to not let the video be viewable on mobile platforms.

If your upload has been claimed by a copyright owner, the owner may be able to restrict the devices on which the video is available.

To learn more about the status of your video and the actions you can take, please visit YouTube's Copyright Center here. You can also view answers to common questions here.