ebook-convert.exe doesn't work with deDRM plugin, unlike GUI or calibredb.exe

fireattack · 05-18-2018, 01:04 AM

You can use GUI with deDRM plugin to add an encrypted azw book with no problem.

You can also use calibredb.exe:

Code:

calibredb.exe add book.azw

the deDRM plugin will be called automatically, and it will successfully add the book.

However, it seems ebook-convert.exe doesn't support plugin, or at least not the deDRM one.

It will just error out at mobi6.py L157 due to (obvious) `DRMError`.

According to what kovidgoyal said before, I assume ebook-convert.exe is supposed to work exactly the same as conversion from the calibre GUI, so I think it's bug.

Thanks for your time!

ilovejedd · 05-18-2018, 01:14 AM

Not a bug. DeDRM plugin removes DRM when you add a book to Calibre. Calibre GUI conversion works on the DRM-free book already. If you try to convert an ebook that still has DRM in Calibre GUI, conversion will fail same as ebook-convert.exe

fireattack · 05-18-2018, 01:21 AM

So is it possible to convert a encrypted book directly without adding it to calibre's DB?

BetterRed · 05-18-2018, 01:22 AM

Depends on the plugin, see Calibre User Manual: FileTypePlugin.

That plugin must have an on_import method because it runs when a book is added, but to work at conversion time it needs an on_preprocess method, you might need to ask elsewhere about that.

BR

DoctorOhh · 05-18-2018, 01:24 AM

Quote:

Originally Posted by fireattack

So is it possible to convert a encrypted book directly without adding it to calibre's DB?

You can't. Add the book as shown in your first post then convert the resultant book.

fireattack · 05-18-2018, 01:33 AM

Thanks for the replies. You guys are very helpful.

fireattack · 05-18-2018, 01:41 AM

Quote:

Originally Posted by BetterRed

Depends on the plugin, see Calibre User Manual: FileTypePlugin.

That plugin must have an on_import method because it runs when a book is added, but to work at conversion time it needs an on_preprocess method, you might need to ask elsewhere about that.

BR

I manually added "on_preprocess=True" in its __init__.py, and it immediately started to work.

Thank you very much!

BetterRed · 05-18-2018, 03:50 AM

Life wasn't meant to be that easy

fireattack · 09-26-2020, 07:14 PM

The plugin has added this functionality by default: https://github.com/apprenticeharper/...ools/pull/1241

So once it's released, it would be able to support ebook-convert out of box.

05-18-2018, 01:04 AM	#1
fireattack Junior Member Posts: 9 Karma: 10 Join Date: May 2018 Device: none	ebook-convert.exe doesn't work with deDRM plugin, unlike GUI or calibredb.exe You can use GUI with deDRM plugin to add an encrypted azw book with no problem. You can also use calibredb.exe: Code: calibredb.exe add book.azw the deDRM plugin will be called automatically, and it will successfully add the book. However, it seems ebook-convert.exe doesn't support plugin, or at least not the deDRM one. It will just error out at mobi6.py L157 due to (obvious) `DRMError`. According to what kovidgoyal said before, I assume ebook-convert.exe is supposed to work exactly the same as conversion from the calibre GUI, so I think it's bug. Thanks for your time!

05-18-2018, 03:50 AM	#8
BetterRed null operator (he/him) Posts: 21,488 Karma: 29308976 Join Date: Mar 2012 Location: Sydney Australia Device: none	Life wasn't meant to be that easy Last edited by BetterRed; 05-18-2018 at 06:15 AM.

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05-18-2018, 01:14 AM	#2
ilovejedd hopeless n00b Posts: 5,110 Karma: 19597086 Join Date: Jan 2009 Location: in the middle of nowhere Device: PW4, PW3, Libra H2O, iPad 10.5, iPad 11, iPad 12.9	Not a bug. DeDRM plugin removes DRM when you add a book to Calibre. Calibre GUI conversion works on the DRM-free book already. If you try to convert an ebook that still has DRM in Calibre GUI, conversion will fail same as ebook-convert.exe

05-18-2018, 01:21 AM	#3
fireattack Junior Member Posts: 9 Karma: 10 Join Date: May 2018 Device: none	So is it possible to convert a encrypted book directly without adding it to calibre's DB?

05-18-2018, 01:22 AM	#4
BetterRed null operator (he/him) Posts: 21,488 Karma: 29308976 Join Date: Mar 2012 Location: Sydney Australia Device: none	Depends on the plugin, see Calibre User Manual: FileTypePlugin. That plugin must have an on_import method because it runs when a book is added, but to work at conversion time it needs an on_preprocess method, you might need to ask elsewhere about that. BR

05-18-2018, 01:33 AM	#6
fireattack Junior Member Posts: 9 Karma: 10 Join Date: May 2018 Device: none	Thanks for the replies. You guys are very helpful.

09-26-2020, 07:14 PM	#9
fireattack Junior Member Posts: 9 Karma: 10 Join Date: May 2018 Device: none	The plugin has added this functionality by default: https://github.com/apprenticeharper/...ools/pull/1241 So once it's released, it would be able to support ebook-convert out of box.

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