This video is more than two hours long. I took a quick glance at it -- it's an overview of various crackpot energy sources and perpetual motion machines. There's also some mention of cold fusion, which I don't regard as crackpot, but it's scarcely a free energy source -- nobody has yet managed to make the cold fusion process practical. Rule of thumb: the more amazing the claim made in this type of video, the more certain it is to be completely untrue.