I don't see how you could debunk a prediction about the future, but I'll watch them.
EDIT: I was agreeing with what he was saying up until he started talking about Nibiru, "Planet X". The narrator makes it seem like the whole idea is a theory, but there is scientific evidence that there is a large body far out in our solar system that is causing certain affects to our solar system. In the early 1900's scientist believed Pluto was the cause of it, but Pluto is way to small to cause it. Scientist still believe today that there is a large body far out past Pluto that is causing this...which some people believe is Nibiru, which could be true, but this doesn't prove it's theorized orbit.
Ok, now I'm gonna try to watch the rest.
EDIT: EDIT: Another thing...he mentioned that aliens would know about the rings and moons of planets, but if aliens some how told Mayans about our solar system...maybe they just didn't mention those things. Maybe they classify our moon as a planet for some reason. Pluto's moon is almost the size of Pluto so any other civilization in outer space could look at Pluto and it's moon as two planets as well as our own Moon.
...Ok, back to the video.
FINAL EDIT: Well at the end he says that he believes in the prophesies of the Holy Bible, which is one of the things I mentioned in my first post.