Quote:
Originally Posted by odamizu
When KindleUnpack gives you an EPUB, is it something KindleUnpack puts together from whatever it finds in the azw3 file, or does that mean the author/publisher used an EPUB as the source material and this is an exact copy of that EPUB?
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KindleUnpack will ALWAYS try put together an EPUB from the source material extracted from a KF8 kindlebook, but that doesn't automatically mean the author started with an EPUB before it was converted to a Kindlebook. It could have been a single html file, or multiple html/css files tied together with an opf file in an OEBPS folder arrangement, or an EPUB. There's no way to know from within the binary kindlebook which way it started out life, so KindleUnpack just goes with EPUB.
An exact copy of the source material can never be reverse-engineered from a binary Kindlebook. The original file names, for instance, can never be recovered since there ARE no file names in the binary KF8 (or mobi for that matter). So those must be programmatically provided. But other than that, KindleUnpack strives not to assume/change anything unless it absolutely has to.