The wonder of 'time-lapse' photography. You take a series of still pictures and stitch them together as a movie. A camera fixed to an ideal spot on a tripod and an attachment to expose the scenes at fixed intervals is all that you need. Subsequently you need to edit this series of pictures on video software on your computer. A 'tablet' or 'phone' camera with applications called 'lapseit' or 'droidtimelapse' could be used to create these of any scene. This is a wonderful hobby. Click on the web-link below to see the result:-
http://youtu.be/l8YaMK4-MYg
http://youtu.be/l8YaMK4-MYg