Thread: Custom columns and epub metadata
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Old 11-22-2011, 10:54 AM   #5
theducks
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Quote:
Originally Posted by xmodder View Post
Ok... I think I have finally understood that you are referring to the metadata.opf files present on each directory in a calibre libray. I was not referring to that OPF files, but to the content.opf file that each epub includes as part of the structure of the .epub file.

The metadadata.opf files created by calibre for each book in the library only contains metadata defined for the corresponding calibre library.
As you know, each .epub file contains a "content.opf" file inside, that holds metadata and the files manifest for the epub. That metadata contained in the internal content.opf file is the one I am interested in.

Calibre reads that metadata from internal epub content.opf file when adding books to a libray (if you have configured that in preferences , what is the default) but only reads standard metadata, not custom ones. Also calibre recovers stadard metadata from content.opf in .epub when you click the button "Import metadata from selected format", but again, only standard metadata, not custom ones.

So, my question is if there is some way to tell calibre to read not only standard metadata from that internal content.opf file but also custom metadata. Again, from the .epub internal content.opf file, not from the external, calibre created, metadata.opf.

Best regards
Your EPUB may fail validation with 'non-standard fields error'
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