Download this video here: http://goo.gl/BK4V1
This is three different 1080p motion graphic videos of the classic newton's cradle swinging metal balls game that demonstrates gravity. One video is close up of the balls swinging with a shallow depth of field. Another video contains the entire five ball setup with a isolated white background. Finally the last video contains a camera move from above the cradle until it is even with the balls. Two of these videos are seamlessly looping and all of them contain an alpha/luma channel you can apply to take out the white background and replace it with your own backdrop.