This movie is taken from the Overunitydotcom's YouTube channel: https://www.youtube.com/channel/UCbcaIfmxRZhnnYVqG81kCZg
Here's link to the original (posted on 01.07.2015): https://www.youtube.com/watch?v=Lks8N-_dQLs
I've uploaded this video to my channel with the permission of the original uploader (thanks, Stefan from overunity.com). I just think this video is quite important and should be seen by many people interested in mechanics, tehnology and related fields.
Here I quote the origin
آی-ویدئو