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Old 09-04-2015, 12:21 PM   #46
jhowell
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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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Old 09-04-2015, 03:47 PM   #47
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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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Old 09-04-2015, 04:20 PM   #48
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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.
Are you telling me you used to have a guarantee that you have the best possible version???

For one, Amazon has always stripped the image sizes. I consider that an advantage, personally...
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Old 09-05-2015, 02:20 AM   #49
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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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Old 09-06-2015, 06:50 PM   #50
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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 book was converted from its physical edition to the digital format by a community of volunteers. You may find it for free on the web. Purchase of the Kindle edition includes wireless delivery.
So I assume it won't be breaking the forum guidelines to upload...



This would be useful for people wishing to investigate KFX even when they don't have a supported device.
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Old 09-06-2015, 06:57 PM   #51
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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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Old 09-06-2015, 09:24 PM   #52
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Originally Posted by eschwartz View Post
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 :

So I assume it won't be breaking the forum guidelines to upload...



This would be useful for people wishing to investigate KFX even when they don't have a supported device.
I've send you the two zip files via PM.
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Old 09-07-2015, 12:01 PM   #53
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I have the Twain book on my PC. I don't see the hyphenation in the K4PC app.
Nor should you. The latest K4PC has the bookerly font, but there is no evidence that it supports enhanced typesetting (KFX).
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Old 09-07-2015, 12:09 PM   #54
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Nor should you. The latest K4PC has the bookerly font, but there is no evidence that it supports enhanced typesetting (KFX).
I thought there were reports elsewhere on MR that the last update added KFX support?
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Old 09-07-2015, 12:13 PM   #55
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I thought there were reports elsewhere on MR that the last update added KFX support?
No, not for K4PC or K4Mac.
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Old 09-07-2015, 12:15 PM   #56
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No, not for K4PC or K4Mac.
Then what's this?
https://www.mobileread.com/forums/sho...PC#post3160503
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Old 09-07-2015, 12:16 PM   #57
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Jon getting it wrong, as usual. K4PC does not have KFX support. Not yet, at least.
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Old 09-07-2015, 12:17 PM   #58
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Jon getting it wrong, as usual.
Well that it explains why it's not working for me.

Thanks.
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Old 09-07-2015, 01:38 PM   #59
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That would be:

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Originally Posted by eschwartz View Post
I am fairly positive that the only person who said K4PC delivers KFX was JSWolf -- he said so based on hearsay, after hearing someone say the update included Bookerly.
He has since retracted his assumption.


Is this going to become a fully qualified zombie meme???
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Old 09-07-2015, 03:06 PM   #60
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Jon getting it wrong, as usual. K4PC does not have KFX support. Not yet, at least.
I'm guessing he got it from an even more dubious source...
http://goodereader.com/blog/e-book-n...nd-kfx-support
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