I have a searchable pdf scan of a book that is two book pages per pdf page, flipped counterclockwise. I want to split the pages so that its one page per page.
After reading several other threads here I used
mutool poster - y 2 input.pdf output.pdf
to split the pages, but now they are disordered. It took the right hand page, which is a higher number page, and put it in front of the lower numbered left hand page. Each subsequent page is disordered in the same way. I tried rotating the pages of the original file 180 degrees and running it again, similar result. Lastly I tried rotating the pages to the correct, upright orientation and running the same command using -x, and that just split each pages in half, and lastly I ran the -y command from the upright orientation and still didn't get what I want.
Clearly I'm doing something very wrong, or not doing something very right.
I've been using Evince Document Viewer for the rotation part.