Yep I have been telling everyone for years that will work. A long as you use notherium as the working fluid between the two pistons the cross-linked homogenised and discombobulated atomic noiderium created from nothing will maintain the process forever
The sad thing about humorous videos like this is that the un-knowing and un-critical take them at face value. My friend's 13-year-old daughter and her friends spent ages building a solar array to power a motor, for a school science fair. I had the unpleasant task of explaining to them that their solar cell made of cardboard, razor blades (yes, really!) and bits of wire couldn't possibly work even though the one in the video performed well.
Fortunately they took it in good part, and converted their project into a display showing how to make fake science videos. They won second prize!
At least it was before the Second Law of Thermodynamics was formulated. The First (conservation of energy) might just allow pertetual motion (there has to be no energy loss, ie no work done, no friction etc).
I now expect a comment such as "What has the Second Law got to do with this"?