Please note I have already tried many apps (Squaready, SquareVid, SizeVid, CropVS, etc...) but it seems like they all only allow you to add a thick border to the top and bottom of the video, and only a thin border to the left and right, which essentially make the video itself a rectangle again!
I am trying to make it so the video itself is a perfect square with a perfectly even white square border around it.
I hope that makes my question clear :) Please tell me if I need to elaborate more. Thank you for your help!