[Conversion Output] KFX Output

[anishmittal]

Hello!

I am trying to convert an Epub to KFX using the Plugin KFX output (1.57.0) with Calibre in Ubuntu 20.4, with KindlePreviewerInstaller.exe (3.59.1) installed using wine-6.0.2.

I am getting the follwoing error:

calibre, version 5.31.1
ERROR: KFX conversion failed:Cannot convert Permanent Record
Conversion error: Process Failure: CLI return code 00000005


Any suggestion, what can I do about this error?

[jhowell]

Originally Posted by anishmittal

Conversion error: Process Failure: CLI return code 00000005

Any suggestion, what can I do about this error?

It appears that there is a problem getting the Kindle Previewer to run under Wine on your system. I am sorry but I do not know how to fix that.

One possible solution is to run Windows in a virtual machine.

[mustafanoah]

hello,
i am using calibre on linux , when i try to convert an e-book from any format to "kfx" format, i keep getting an error during conversion
this is the error:

calibre, version 5.11.0
ERROR: KFX conversion failed: Exception('Wine registry file /home/mhnoah/.wine/user.reg not found. Ensure that Wine is correctly installed.')

i installed wine and i keep getting the error

what should i do ??

[jhowell]

Version 1.58.0 - 27 Nov 2021

Detect Kindle Previewer versions up to 3.60.0. Version 3.60.0 adds support for additional list-style-type values.

Fix conversion to retain the creation date and multiple author names if present in the source EPUB. (Only the first author name will be shown on Kindle devices for books in KFX format.)

Fix embedding of metadata to maintain the order of author names when a book has multiple authors.

[jhowell]

Originally Posted by mustafanoah

ERROR: KFX conversion failed: Exception('Wine registry file /home/mhnoah/.wine/user.reg not found. Ensure that Wine is correctly installed.')

From the error message it appears that you have not installed Wine correctly on your system. I am not a Linux user and do not have any suggestions on how to fix that.

[mwaschbu]

Originally Posted by mustafanoah

ERROR: KFX conversion failed: Exception('Wine registry file /home/mhnoah/.wine/user.reg not found. Ensure that Wine is correctly installed.')

Did you already run Wine to install the Kindle Previewer?
That file should be there for every Wine installation. Does it exist and can you access its content?
Did you install Calibre via Snap, Flatpak, AppImage or something similar? That will not work. It must be installed directly in your system and not in a container.

[anishmittal]

Originally Posted by anishmittal

Hello!

I am trying to convert an Epub to KFX using the Plugin KFX output (1.57.0) with Calibre in Ubuntu 20.4, with KindlePreviewerInstaller.exe (3.59.1) installed using wine-6.0.2.

I am getting the follwoing error:

calibre, version 5.31.1
ERROR: KFX conversion failed:Cannot convert Permanent Record
Conversion error: Process Failure: CLI return code 00000005


Any suggestion, what can I do about this error?

@mwaschbu Can you please comment on this?

I again reinstalled wine and Kindle previever, but I am stuck with the same error.

[anishmittal]

@mwaschbu @jhowell

I successfully installed and converted epub using
- Plugin KFX output (1.57.0) with Calibre in Ubuntu 20.4, with KindlePreviewerInstaller.exe (3.59.1) installed using wine-6.0.2.

[jhowell]

Originally Posted by anishmittal

@mwaschbu @jhowell

I successfully installed and converted epub using
- Plugin KFX output (1.57.0) with Calibre in Ubuntu 20.4, with KindlePreviewerInstaller.exe (3.59.1) installed using wine-6.0.2.

I’m glad to hear it. Feel free to share any tips you may have on getting it installed and working.

[eyalmazuz]

Originally Posted by jhowell

I’m glad to hear it. Feel free to share any tips you may have on getting it installed and working.

I had a similar problem with wine 6.22 and 6.23 but it seems to be fixed with wine 7.0-rc1
I used KFX output 1.58 and kindle previewer 3.60 on Ubuntu 20.04

[unkn0wn]

When converting an epub to kfx format, it normally reconverts the epub to epub like you said, before converting to kfx.

but during this process it re-scales all images to a lower resolution. (although not by much)

Can we change it, to not to re-scale images at all, so that all images remain in their original resolution?

[jhowell]

Originally Posted by unkn0wn

Can we change it, to not to re-scale images at all, so that all images remain in their original resolution?

The scaling of images is controlled by the Output Profile selected in the Page Setup tab of the conversion dialog. Choosing Tablet will disable the scaling of images.

(This is a feature of calibre, not specific to KFX conversion.)

[unkn0wn]

Ooh

Thanks.. my profile was set to kindle oasis, that maybe why.

I saw that it was re-scaling images of lower resolutions too, and so i thought it might be related.

[jhowell]

Originally Posted by unkn0wn

I saw that it was re-scaling images of lower resolutions too, and so i thought it might be related.

Cover images may be regenerated by the KFX Output plugin for compatibility with the Kindle's cover lock screen feature, but that should not change their dimensions.

The part of KFX conversion performed by the Kindle Previewer checks images for Kindle compatibility. I haven't seen that reduce resolution except for extremely large images.

If there is anything else going on with image scaling I am unaware of it.

[Babyblasphemy]

Not sure if others have seen this, but I could not get the Kindle App on Android to see KFX files unless I placed them in Android/data/com.amazon.kindle/files instead of Books, Documents, or any other folder the app had access to.