From the looks of it, the video is a typical grainy, inconclusive Bigfoot-style shot that will convince believers and fail to impress skeptics. (And haven't the little green men heard of the Prime Directive?)
But what if it was convincing? It would probably alter NASA's space program. Groups would try to figure out a way to kill it, or weaponize it. Biologists would have a field day.
If suddenly presented with solid, convincing evidence of extra-terrestrial life, how do you think life on Earth would change (if at all)? What about your personal worldview?