Thread: Getting my calibre library ready for kobo forma questions
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Old 03-16-2020, 05:49 PM   #22
davidfor
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Join Date: Jul 2011
Location: Sydney, Australia
Device: Kobo:Touch,Glo, AuraH2O, GloHD,AuraONE, ClaraHD, Libra H2O; tolinoepos
Quote:
Originally Posted by hobnail View Post
I used to edit the metadata directly by dragging the book from calibre to the desktop, delete it from calibre, fix its metadata in sigil, then drag it back into calibre. Your method only changes the metadata inside the epub; calibre still displays the incorrect/unchanged metadata, which for me is always the author (sometimes all caps or some other nonsense).

The actions that I have checked in Polish books are smarten punctuation, update metadata in the book files, update the cover in the book files, remove a previously inserted book jacket, remove unused css rules from the book, losslessly compress images, and upgrade book internals. Each one has an About link next to it that explains what it does. For me, none of those degrade the book. The only downside is having to use the Remove books button remove the ORIGINAL_EPUB file.
There is no real reason to use Polish books or any of the other methods to update the metadata of the books in the library. Calibre will update the metadata whenever you send the books outside of calibre. That means when you send the book to the device, the metadata is updated. And will use the metadata plugboard as part of the update. Same with save to disk. And editing the book using the calibre editor will also update the metadata. All of these can be turned off. But, if you weren't doing the other actions, there would be no real point in using Polish. If you just want to update the metadata, use the Embed metadata tool.

Quote:
Originally Posted by JSWolf View Post
What I do is if the metadata needs fixing, I do it directly in the OPF using the Calibre editor. I have not polished in a very long time. If the metadata is correct, there's no need to polish. In most cases, the metadata is correct. Other then the metadata, what would you be polishing? You did make it sound like it was a good idea to always polish.
I have no idea what you think you are achieving with that process. As the calibre can update the metadata in the book when you open it in the editor, that might explain why it is always correct. If you have turned that off, then it means you are maintaining the metadata twice, one in the library and then in the editor. Or do you update the book and then open the metadata editor and set the metadata from the book? And of course, calibre will update the metadata when you send the book to the device. And of course the driver will later update the metadata on the device when you reconnect. So, what's the point?
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