Where do I find and how do I get the thumbnail that my youtube video uses?
http://img.youtube.com/vi/<insert-youtube-video-id-here>/0.jpg
http://img.youtube.com/vi/<insert-youtube-video-id-here>/1.jpg
http://img.youtube.com/vi/<insert-youtube-video-id-here>/2.jpg
http://img.youtube.com/vi/<insert-youtube-video-id-here>/3.jpg
As easy as that?
-Yes!
For instance you can have a look at these:
http://img.youtube.com/vi/DynNzmdnzqo/0.jpg
http://img.youtube.com/vi/DynNzmdnzqo/1.jpg
http://img.youtube.com/vi/DynNzmdnzqo/2.jpg
http://img.youtube.com/vi/DynNzmdnzqo/3.jpg
Thats it thats all!