Ill be honest this was not shot in portrait. I used the hyperlapse free mode, set it to save the jpegs then i made that in post. Real time lapse, fake hyper lapse portrait lol, but it looks pretty cool imo. Good luck with your new mini3!
Also for some reason the /shorts/ part of my link might be being removed from the forum side? I post the shorts link but on the forum it turns it into a non short. The short is still up on my end