The calibredb command will write any out-of-date metadata.opf files, then exit. The files will be up to date when it finishes.Īdvanced idea: you might consider putting this command in a script that you use to start calibre so that the files written as soon as possible. Run the calibre command line program "calibredb backup_metadata".Leave calibre running until the metadata backup status says that it is finished.You can avoid this problem by ensuring that calibre has finished writing the files in one of two ways: You can see if calibre has finished by (in calibre) clicking the Library button, choosing "Library Maintenance", then "Library metadata backup status". CC detects this possibility, notifies you, and then uses the possibly-incorrect values. If you exit calibre before it is finished writing the files then the values for the composite columns stored in old metadata.opf might not be correct. Calibre writes these files while it is running at the rate of around 2 files per second. It is possible that the metadata.opf file is not up to date because when you change metadata for a book, calibre writes the metadata.opf files one-by-one.
When you use the cloud connection to download a book or to look at a book's details, CC fetches the metadata.opf and reads the composite column values from that file. Because of this, CC cannot read these values from the database stored in the cloud.ĬC V5.0.3 and later: The values for composite columns are also stored by calibre in the "metadata.opf" file saved with every book in the calibre library. Instead, calibre computes them when needed. You must also already use calibre to manage your library of ebooks.The values for calibre custom columns "built from other columns" ("composite" columns) are not stored in calibre's database. You must install and use one of the many excellent reader apps available. Calibre automatically updates all the book metadata stored by CC to match the latest in your library.ģ) CC can connect to calibre’s content server or to your cloud provider to browse your library and download books to your device. Once connected, you use calibre to move books to and from your device.
launch your book reader application to read a bookĢ) CC can connect to calibre over WiFi and be detected by calibre as a device. mark books read and sync this information with calibre.
sort and group books by their metadata. view a book's metadata (author, tags, series, rating, dates, etc.). Once you put books on your device using one of the connection methods described below you can: a calibre content server and cloud provider client (Dropbox and Microsoft OneDrive)ġ) CC is a device-based calibre library organiser. a high-performance WiFi-based calibre device emulator a superb device-based calibre library organiser Calibre Companion (CC), recommended by calibre developers, is three applications in one:
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