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#46 |
Grand Sorcerer
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Karma: 85000001
Join Date: Nov 2011
Location: Charlottesville, VA
Device: Kindles
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Interesting analysis, tomsem.
On my PW2 the images from KFX books are in a separate KFX file in the assets/attachables subdirectory of the book's sdr directory. These are not obfuscated and can be found easily within the file. Comparing these KFX images with those from the corresponding AZW3 file downloaded from Amazon's web site shows some major differences. The images from the KFX file are highly compressed in JPEG-XR format. Also, most (but strangely not all) are reduced to black-and-white. Amazon is taking customization of book files delivered to individual devices to an extreme. This may make it difficult in the future to get the "best" version of a book for those who want to archive books or convert them to another format. |
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#47 |
doofus
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Karma: 13088847
Join Date: Sep 2010
Device: Kobo Libra 2, Kindle Voyage
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^^^ this means now even if you can de-DRM kfx it is no guarantee you "own" the best possible version of the file.
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#48 | |
Ex-Helpdesk Junkie
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Karma: 85397180
Join Date: Nov 2012
Location: The Beaten Path, USA, Roundworld, This Side of Infinity
Device: Kindle Touch fw5.3.7 (Wifi only)
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Quote:
For one, Amazon has always stripped the image sizes. I consider that an advantage, personally... |
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#49 |
Connoisseur
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Karma: 495132
Join Date: Jun 2012
Device: iPad, Kindle Fire, Kindle Paperwhite
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Looking forward to the KFXGen tool, I guess it's the key if we want Calibre to support this format.
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#50 | |
Ex-Helpdesk Junkie
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Karma: 85397180
Join Date: Nov 2012
Location: The Beaten Path, USA, Roundworld, This Side of Infinity
Device: Kindle Touch fw5.3.7 (Wifi only)
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I'd like to request a favor.
Can someone who has a KFX-enabled device please upload a zipped KFX (with all the resources et cetera) in addition to the AZW3 for this book, which indicates it is KFX-enabled: Life on the Mississippi, by Mark Twain It is a free, PD book with the usual description that indicates it was uploaded by Amazon from the Gutenberg archives or wherever they them from ![]() Quote:
This would be useful for people wishing to investigate KFX even when they don't have a supported device. ![]() |
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#51 |
Sir Penguin of Edinburgh
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Karma: 23555235
Join Date: Apr 2007
Location: DC Metro area
Device: Shake a stick plus 1
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I have the Twain book on my PC. I don't see the hyphenation in the K4PC app.
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#52 | |
Guru
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Karma: 10500008
Join Date: Feb 2010
Location: Serbia
Device: Kindle PW5, Kobo Libra 2, Kindle PW1
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#53 |
Grand Sorcerer
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Karma: 85000001
Join Date: Nov 2011
Location: Charlottesville, VA
Device: Kindles
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#54 |
Sir Penguin of Edinburgh
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Join Date: Apr 2007
Location: DC Metro area
Device: Shake a stick plus 1
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#55 |
eBook Enthusiast
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Karma: 93383043
Join Date: Nov 2006
Location: UK
Device: Kindle Oasis 2, iPad Pro 10.5", iPhone 6
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#56 |
Sir Penguin of Edinburgh
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Join Date: Apr 2007
Location: DC Metro area
Device: Shake a stick plus 1
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Then what's this?
https://www.mobileread.com/forums/sho...PC#post3160503 |
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#57 | |
eBook Enthusiast
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Karma: 93383043
Join Date: Nov 2006
Location: UK
Device: Kindle Oasis 2, iPad Pro 10.5", iPhone 6
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#58 |
Sir Penguin of Edinburgh
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Device: Shake a stick plus 1
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#59 | ||
Ex-Helpdesk Junkie
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Karma: 85397180
Join Date: Nov 2012
Location: The Beaten Path, USA, Roundworld, This Side of Infinity
Device: Kindle Touch fw5.3.7 (Wifi only)
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Quote:
Quote:
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#60 | |
SQUIRREL!!
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Karma: 8400000
Join Date: Nov 2010
Location: California
Device: K-Fire, PW2, PW3
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Quote:
http://goodereader.com/blog/e-book-n...nd-kfx-support |
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