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Originally Posted by ZodWallop
What determines the file format of an ebook? I just downloaded The House of Styx published by Solaris in August 2020 and got a mobi. |
The internal metadata for that book shows that it was produced using mobigen version 6.2 build 43 from 2008. (Mobigen was the predecessor to Kindlegen.) That software predates KF8 (azw3) format and produces only the old MOBI V7 format. Very odd choice of software for a mainstream publisher to be using! Amazon would no longer accept that file today.
Not the case for this book, but a common source of MOBI format in recently published books is Amazon's Kindle Create software for self-publishers. That prodcues only KFX format for reflowable books and Amazon produces a MOBI version from that for delivery in any case where KFX is not supported.
Quote:
Originally Posted by ZodWallop
Would that mean that even with the K4PC changes I would still get a mobi file? And if so, would that still work with DRM removal tools?
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Amazon did produce a KFX version of that book which will be used instead of MOBI on devices that support that format, including the latest version of Kindle for PC.