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Old 07-24-2018, 09:02 AM   #1
LaChica
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Unhappy Failed to convert JPEG-XR image

Hi,

I am converting two .kfx files to EPUB. First file converted without a hitch, second file reported the following error message in full:

Exception during conversion of JPEG-XR 'resource/-y3Wvp1LTU_AckVIlnqBQA2237.jxr' to TIFF: NotImage: Failed to convert JPEG-XR image

These two books are part 2 and 3 of a series, so I completely failed to understand why 1 converts and the other does not.

Any help is very welcome!
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Old 07-24-2018, 11:59 AM   #2
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The KFX Input plugin uses JPEG-XR image conversion (JxrDecApp) that is included as part of calibre. This fails for some images.

I have reported this as a calibre bug.
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Old 07-31-2018, 08:07 AM   #3
LaChica
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Thank you for your reply!
Does this mean I cannot convert this book until the bug gets fixed?
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Old 07-31-2018, 09:19 AM   #4
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Quote:
Originally Posted by LaChica View Post
Thank you for your reply!
Does this mean I cannot convert this book until the bug gets fixed?
If you follow jhowell's link to the bug report in the post above you will see that the bug is fixed. When you download the next release it should work fine.
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Old 08-17-2018, 09:55 AM   #5
traktor
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Hi guys.

I still experience this error. I updated everything to the latest versions:
calibre - 3.29.0
KFX Input - 1.7.0
DeDRM - 6.6.1

Any ideas how to fix it?

Thanks
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Old 08-17-2018, 09:05 PM   #6
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Originally Posted by traktor View Post
Any ideas how to fix it?
Read the last sentence of DoctorOhh's post just above yours Ψ²

BR
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Old 08-18-2018, 02:26 PM   #7
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It looks like the change Kovid made didn't fix the problem. I will look into it further.

In the mean time you could try using one of the methods in this thread to avoid KFX:

https://www.mobileread.com/forums/sh...d.php?t=283371
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Old 08-19-2018, 08:53 AM   #8
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Thanks.
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Old 08-30-2018, 09:22 AM   #9
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The latest release of the KFX Input plugin (version 1.8.0) should take care of the occasional problem converting JPEG-XR images from kindle devices.
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Old 09-04-2018, 05:52 AM   #10
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Thank you jhowell,

Problem fixed.
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