Here's my first attempt at 4K resolution video.
It's made up of approximately 1300 photos shot at 16mp at 350dpi.
Your computer may not be able to play it in full resolution. Choose the 'original' setting above the 1080p option. It will take a while to fully load unless you have an extremely fast internet connection.
http://www.youtube.com/watch?v=CysekbdfiFs