Well, I haven't even watched it but I notice a considerable absence of trees or other artefacts that move in wind... a critical factor that I mentioned earlier about the first video.
Don't you think that if this was speeded up the people would move, no matter how slightly, in a noticeably "speeded up" manner?
Did you also notice the greater depth of field? That you can see the entire keyboard... Ask yourself, "Why would anybody choose to put the camera where it is in the first video?"
This is a noted concert pianist, how would she make a living if she "cheated"? These points are fairly basic really.
When it comes to credibility, so is THIS one!https://www.carnegiehall.org/Calendar/2018/05/17/YUJA-WANG-0800PM
If your video is "clearly real" they would have nothing to disguise, would they? So they would choose a sensible camera angle, wouldn't they? They have done that, haven't they?
Really, this video is not even comprable to the first one due to the environment and the natural choice of field of view and the proven talent and ability of the artist concerned.
There are many, many talented and worthy amatuer pianists out there posting videos and virtually all are genuine, I think this is only the second I have seen that I question the authenticity of. But that is definite... I DO question the authenticity of the original video.
I don't suppose you are actually quite young and "cleverly" looking for tips how to cheat, are you? If you attempt to post videos claiming to be the new Oscar Peterson I think we will know where you tried it out first...