Each YouTube video has 4 generated images. They are predictably formatted as follows: 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 The first one in the list is a full size image and others are thumbnail images. The default thumbnail image (ie. one of 1.jpg, 2.jpg, 3.jpg) is: http://img.youtube.com/vi/<insert-youtube-video-id-here>/default.jpg For the high quality version of the thumbnail use a url similar […]