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AdrianJ · 11-02-2024, 06:47 PM

Thanks BetterRead
I looked in the epub file of a book which has this problem, using both Calibre and Sigil editors. The offending tags are not found. And yet MoonReader digs them up from somewhere when I add the book ( in epub format ) to its bookshelf on an Android tablet

Ah! I think I see what happens.
I originally got the book in .mobi format ( which does contain those odd tags) , converted it to .epub format, and used the Calibre metadata editor to replace the tags. I then copied the book from my main Calibre library to another library, the one I use to source books from Calibre Sync via a cloud server. Calibre copies both the .epub and the original .mobi file to the new library, but I dont send the .mobi files on to the cloud server I use. But that of course leaves the metadata.db file with the original mobi data and file references. Those then get picked up by MoonReader and shown. Interestingly they are not shown by the Calibre Sync filtering and selection system.

I guess it depends where the various programs pick up the metadata from, the original .epub file, the metadata.opf file for that book, or the Calibre metadata.db file for the entire library.

It would be useful if one could set the Calibre library copy function to send only books of a specific fomat to another library, like you can do with the disk file copy function.

Think I will ignore Moonreaders bookshelf, and just use Calibre Sync to select the book I want to read. That works perfectly.

11-02-2024, 06:47 PM	#6
AdrianJ Junior Member Posts: 9 Karma: 10 Join Date: Oct 2024 Device: Boox TabMiniC	Thanks BetterRead I looked in the epub file of a book which has this problem, using both Calibre and Sigil editors. The offending tags are not found. And yet MoonReader digs them up from somewhere when I add the book ( in epub format ) to its bookshelf on an Android tablet Ah! I think I see what happens. I originally got the book in .mobi format ( which does contain those odd tags) , converted it to .epub format, and used the Calibre metadata editor to replace the tags. I then copied the book from my main Calibre library to another library, the one I use to source books from Calibre Sync via a cloud server. Calibre copies both the .epub and the original .mobi file to the new library, but I dont send the .mobi files on to the cloud server I use. But that of course leaves the metadata.db file with the original mobi data and file references. Those then get picked up by MoonReader and shown. Interestingly they are not shown by the Calibre Sync filtering and selection system. I guess it depends where the various programs pick up the metadata from, the original .epub file, the metadata.opf file for that book, or the Calibre metadata.db file for the entire library. It would be useful if one could set the Calibre library copy function to send only books of a specific fomat to another library, like you can do with the disk file copy function. Think I will ignore Moonreaders bookshelf, and just use Calibre Sync to select the book I want to read. That works perfectly.