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Old 07-18-2009, 01:42 PM   #1
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Managing Conversions

I am running 0.6 b13, and I have a question/observation.

I have been updating metadata on many of the 700+ books in my library. My next step is obviously to convert the books so that I can have clean copies with updated metadata.

I tried to do a mass-convert of my entire library, but calibre choked on that. I was able to convert 100 books, but two or three had problems and didn't convert. I haven't gotten around to completing the rest yet.

However, this points out to me that I don't have any clear way of knowing which I've already converted, which choked, and which have changed meta-data but haven't converted yet. I believe the date information only shows when the library entry was first made (correct?).

I'm not sure about the best implementation, but here are a couple thoughts. 1) An additional date field that shows the last conversion time; or 2) A flag that can be set manually and is set automatically when the meta data changes. This flag shows that the book needs to be converted. You could then do a search/filter on the flag to see books that need to be converted. Every time a book is successfully converted, this flag would be reset.

Comments?
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Old 07-18-2009, 01:48 PM   #2
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If you are converting to another format then you can easily use the "not format:xxx" option in the Search critieria to find books for which do not have format xxx. However this will not work if converting to the same format.
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Old 07-18-2009, 03:11 PM   #3
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Actually, all that's really needed in this scenario is a way to mass delete a specific format from all books in the library. You do that, then you can use itimpi's tip above to figure out which have not been converted.

Having a "metadata out of sync" flag is of course a more general and robust solution, but a little harder to implement.
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Old 07-18-2009, 03:46 PM   #4
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Except that sometimes I only have one format.

I want to convert from that format back to that format so that I can get the metadata updated.
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Old 07-18-2009, 03:51 PM   #5
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Ah yes, for that scenario there is no existing clean solution.
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Old 07-19-2009, 01:26 AM   #6
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Quote:
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Except that sometimes I only have one format.

I want to convert from that format back to that format so that I can get the metadata updated.
Does the Save function no longer do that in the new version of Calibre?
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Old 07-19-2009, 12:14 PM   #7
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Does the Save function no longer do that in the new version of Calibre?
It does, but it typically doesn't update covers as often that requires drastic re-assembly of the files.
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Old 07-20-2009, 12:10 AM   #8
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It does, but it typically doesn't update covers as often that requires drastic re-assembly of the files.
Does that mean that cover changes aren't updated when a file is transferred onto a device?

Just trying to understand how you would force an update of all changes so that you would have a fully corrected book file. If, say, you wanted to give a copy to a friend.
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Old 07-20-2009, 01:15 AM   #9
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Yes covers are not updated when you send to device (actually they may be updated for a couple of formats, LRF springs to mind) but for most formats, they are not.
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Old 07-20-2009, 01:33 PM   #10
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Does that mean that cover changes aren't updated when a file is transferred onto a device?

Just trying to understand how you would force an update of all changes so that you would have a fully corrected book file. If, say, you wanted to give a copy to a friend.
So to force a fully corrected book file you do a conversion, and it can be a conversion from the same format back to the same format in order to update the book. The third icon from the top left is the conversion icon.

However, I didn't think about your tip of using a save. I guess that (as long as the cover didn't change) I could save back into the existing directory. I'm not sure if there would be any difference or advantage over a convert. I'd also need to experiment to see how I would save multiple books each into its appropriate directory. I do see that there are save options that seem to relate to that, but I'd have to experiment to verify.
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Old 07-20-2009, 02:16 PM   #11
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Quote:
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Yes covers are not updated when you send to device (actually they may be updated for a couple of formats, LRF springs to mind) but for most formats, they are not.
Clearly I'm missing something, because this seems like a step back from the capabilities of previous Calibre. I was under the impression (in .5x) that you could force metadata and cover changes to be updated by Saving the file, and also that it happened automatically when a file was transferred to the reader.

What am I missing? How do you get Calibre to give you a fully updated book file?
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Old 07-20-2009, 02:30 PM   #12
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you aren't missing anything, the metadata update capabilities of calibre 0.6 are >= calibre 0.5. calibre 0.5 also didn't update covers for the majority of formats
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Old 07-20-2009, 09:44 PM   #13
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What am I missing? How do you get Calibre to give you a fully updated book file?
Do a "Convert ebooks". You can convert from (for example) mobi ==> mobi or convert from one format to another (for example) mobi ==> epub.

In either case, the output file will be fully updated.
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Old 07-20-2009, 10:36 PM   #14
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Do a "Convert ebooks". You can convert from (for example) mobi ==> mobi or convert from one format to another (for example) mobi ==> epub.

In either case, the output file will be fully updated.
I thought the whole point of this discussion was that that did not necessarily update the file completely. To quote previous:

Quote:
Originally Posted by emellaich View Post
Except that sometimes I only have one format.

I want to convert from that format back to that format so that I can get the metadata updated.
Quote:
Originally Posted by kovidgoyal View Post
Ah yes, for that scenario there is no existing clean solution.
?? Which is it?
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Old 07-21-2009, 12:23 AM   #15
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A re-convert will cleanly update all metadata. A save to disk may not. My comment about there not existing a solution for the case was with regard to the OPs original question about ways to know which files haven't been converted
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