Quote:
Originally Posted by Gregg Bell
Notjohn said even though a file may have a .mobi extension it's not necessarily a .mobi.
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If you're referring to the reply you got at the amazon forum, I'd say it's a little misleading.
The mobi format is a "container" format. It can - and often will - contain "itself" - that is, a mobi file can be unpacked into several files that are valid mobi files by themselves. The outer "container" is
also a valid mobi file, though. There's generally no reason to start digging into it to split out the internal versions.
(On rereading my convoluted sentences, I'm not sure I made your need for aspirin any smaller, though.)
As for your original question: The "converted" folder is created by Kindle Previewer. Say you have a file named
"Bell,Gregg-ANovel.epub"
You open that file in (a recent version of) Kindle Previewer. Previewer creates a folder named
"converted-Bell,Gregg-ANovel.epub"
and saves the mobi version of your book inside that folder, with a name on the format
"Bell,Gregg-ANovel_2014-03-30-21-55.mobi"
If you open the epub again a little later, Previewer will repeat the conversion process and store the result as
Bell,Gregg-ANovel_2014-03-30-22-06.mobi
I think - although I must admit I'm not 100% sure - that the "compiled" folder serves the exact same purpose, except that it is created by an older version of Kindle Previewer. I.e. there's no real difference between the folders, except that they're created by different versions of Kindle Previewer.