If your favorite video is deleted or is not available on the Youtube.com web site, here is the solution.
UndeleTube allows you to view deleted or not invariables video. All you need is the id video number*.
DelTube also you can use for deleted videos
*How to get ID:
http://www.youtube.com/watch?v=ID_HERE
Unfortunately, these programs who were useful to restore deleted videos don’t exist yet.