Our book has quite simple page numbering: 1, 2, 3 and so on. (We don't use any special numbering for the first pages, e.g.: the book title is on the page 1, technical information about the book is on the page 4, table of contents starts on the page 5, the main content starts on the page 12. Maybe that's unusual, but the book is already printed, and we can't change it.)
We have the PDF and want to publish on Google Play Books. The problem is that Google Play assigns page numbers in a different way: i, ii, iii, iv, 1, 2, 3 and so on — such page numbers are displayed in the Google Play user interface controls: on the trackbar (bottom) and on the “Contents” pop-up (top-right). So, the actual numbering in the book (visible in the corners of pages and in the in-book table-of-contents) and numbering in the Google Play UI controls (trackbar and TOC pop-up) don't match.
I know PDF allows to specify
\PageLabels. We successfully specified them in the PDF (other PDF viewers display them correctly), but Google Play simply ignores these specifications (we even tried several unusual styles like “cover, zzz-I, zzz-II, zzz-III, 1, 2, …” for the sake of experiment — just in case Google Play ignores only the trivial specifications like “1, 2, …” but respects others — but it ignores any).
I would think that the problem is unsolvable and that Google Play is simply hardcoded to set “I, II, III, IV, 1, 2, …”, but the thing is that when we did some experiments with submitting a smaller PDF into Google Play, the “I, II, 1, 2, …” (without III and IV) numbering was used! So, it looks like Google Play does support multiple ways (and maybe even supports “1, 2, …”) — but we simply don't know what influences its choice.
Some time ago I assumed that it renumbers pages in the way that a page referred by the first item of TOC (I mean a TOC in the metadata) gets number 1. So, I thought that if I artificially start metadata-TOC with a “Bla-bla-bla — page 1”, pages won't get renumbered. But it appeared to be not true.
So, any ideas how I can force Google Play Books to use “1, 2, …”-style numbering for PDF book?