How to get Youtube’s video thumbnail
Depends on the resolution you need, you can use the following URLs:
Default Thumbnail http://img.youtube.com/vi/<insert-youtube-video-id-here>/default.jpg
High Quality Thumbnail http://img.youtube.com/vi/<insert-youtube-video-id-here>/hqdefault.jpg
Medium Quality http://img.youtube.com/vi/<insert-youtube-video-id-here>/mqdefault.jpg
Standard Definition http://img.youtube.com/vi/<insert-youtube-video-id-here>/sddefault.jpg
Maximum Resolution http://img.youtube.com/vi/<insert-youtube-video-id-here>/maxresdefault.jpg… Read the rest