Problem with conversion and an error that may be unintended normal behaviour

slantybard · 09-28-2015, 01:58 PM

I find that when I convert an epub, 2 files are generated ("epub" and "original_epub") which I understand is the expected normal behaviour of calibre in trying to retain the original epub.

Unfortunately, I always run into the problem where if I use the editor window or remove book command and delete the newly converted epub because I want to go back and try different settings with the original epub, I always get an error trying to convert the "original_epub" file where calibre spits out the "could not convert x or x books because no supported source formats were found".

Given removal of the epub and leaving the "original_epub" behind to be used should be an expected behaviour of some calibre users. I can see how calibre needs to have a way of separating the original and any converted epubs in the database and does so by renaming files, but there needs to be some workflow allowing us to "roll back" to the original epub in our databases.

Maybe I'm missing an obvious step to doing this, but I couldn't see a way to do this in the manual or when I search the forums. Thanks for any help.

theducks · 09-28-2015, 02:25 PM

(the way I know)
In the Metadata editor: right-click in formats area: Restore

slantybard · 09-28-2015, 03:46 PM

Perfect, thanks so much for the help!

09-28-2015, 01:58 PM	#1
slantybard my parent's oops... Posts: 492 Karma: 1477572 Join Date: Feb 2009 Device: Vx->Handera->Clie-> Axim->505->650->KPW/Aura ->L2->iOS/CBW	Problem with conversion and an error that may be unintended normal behaviour I find that when I convert an epub, 2 files are generated ("epub" and "original_epub") which I understand is the expected normal behaviour of calibre in trying to retain the original epub. Unfortunately, I always run into the problem where if I use the editor window or remove book command and delete the newly converted epub because I want to go back and try different settings with the original epub, I always get an error trying to convert the "original_epub" file where calibre spits out the "could not convert x or x books because no supported source formats were found". Given removal of the epub and leaving the "original_epub" behind to be used should be an expected behaviour of some calibre users. I can see how calibre needs to have a way of separating the original and any converted epubs in the database and does so by renaming files, but there needs to be some workflow allowing us to "roll back" to the original epub in our databases. Maybe I'm missing an obvious step to doing this, but I couldn't see a way to do this in the manual or when I search the forums. Thanks for any help.

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09-28-2015, 02:25 PM	#2
theducks Well trained by Cats Posts: 31,046 Karma: 60358908 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	(the way I know) In the Metadata editor: right-click in formats area: Restore

09-28-2015, 03:46 PM	#3
slantybard my parent's oops... Posts: 492 Karma: 1477572 Join Date: Feb 2009 Device: Vx->Handera->Clie-> Axim->505->650->KPW/Aura ->L2->iOS/CBW	Perfect, thanks so much for the help!

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