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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.

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    What exact commands did you use to rotate it? Either "180 then -y 2" or "90 then -x 2" should have worked (assuming it's a left-to-right book). – JigglyNaga Dec 7 '18 at 15:21
  • can you clarify exactly how to use the "180" or "90" part of the command in command context? – Bad medicine Dec 12 '18 at 13:29
  • I tried rotating with mutool draw -R 180 and ... 90, and some versions crashed, while others inexplicably mirrored all the text. But maybe that's just my example PDF (a typical exported text document, not a scan). That's why I asked what command you tried. – JigglyNaga Dec 12 '18 at 14:52

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