It's an impressive clip. Certainly seems authentic with all the beeps and 70's era space camera effects.
I'd say without a doubt that IF such a craft were on the moon, the US government would never publicize it. It would instead conduct additional missions in secret to investigate and recover of it anything possible, and even bury it when they were through. *IF* it were real.
Having said that, it wouldn't be the first time a video was faked, and a related video of a patch sure seems hokey: