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Old 02-21-2011, 01:14 PM   #1
RogHelt
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Calibre "chokes" on large ebook conversion

This is the first time I've experienced this:

I'm attempting to use Calibre's "remove spacing between paragraphs" feature for a Mobi book that is 16MB in size, quite large. It's the "Collected Works of Balzac" I bought last December. Calibre begins the conversion, but then stops at 47% progress, even though the "Jobs" wheel continues spinning in the lower left hand corner and the "Status" tab says it's still working. After up to 12 minutes I stop the process because it always gets stuck at ... 47%!

I even try converting the same book to ePub with the same parameter but the same good old "47%" roadblock occurs.

I've done a search about Calibre book-size limitations in their documentation and these forums, but so far no luck, or I overlooked something.

Is there an other way to convert/modify very large ebooks? Do I let Calibre's conversion run until it eventually finishes the large task? Or has the book size exceeded the program's limits?

I have enclosed a text file of the last log of one of my conversion attempts (over 10 minutes) in case it can help solve my problem.

Thank you in advance.
Attached Files
File Type: txt Calibre_log.txt (3.1 KB, 125 views)

Last edited by RogHelt; 02-21-2011 at 01:17 PM.
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Old 02-21-2011, 02:08 PM   #2
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Quote:
Originally Posted by RogHelt View Post
"Status" tab says it's still working. After up to 12 minutes I stop the process because it always gets stuck at ... 47%!
If it says it's working then it's working.


Quote:
Originally Posted by RogHelt View Post
Do I let Calibre's conversion run until it eventually finishes the large task?
Yes. It's a large task it's going to take a while.

Quote:
Originally Posted by RogHelt View Post
Or has the book size exceeded the program's limits?
There is no size limit.
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Old 02-21-2011, 02:27 PM   #3
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If it says it's working then it's working.




Yes. It's a large task it's going to take a while.



There is no size limit.
That's good to know about there being no size limit, thank you for such a fast reply.

I've been running the same conversion job...again...on this large book for over 25 minutes now, and it's still going ... the progress tab is still saying...you guessed it...67%. Hopefully running it for maybe an hour might complete the job. Will update here if/when it finishes...hopefully
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Old 02-21-2011, 02:33 PM   #4
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As long as there are no errors, the conversion is still working. I've had certain conversions run for up to 24 hours, and I know others have had similar experiences. Just let it work.
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Old 02-21-2011, 02:40 PM   #5
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As long as there are no errors, the conversion is still working. I've had certain conversions run for up to 24 hours, and I know others have had similar experiences. Just let it work.
Thanks again, this is a terrific forum filled with great & helpful people!!

I'll let it run as long as it needs.

My only remaining question: is that "67%" progress reading normal for these long conversions, even after (now) 42 minutes and longer?

EDIT: I meant to say "67%" in my original query, not 47%.

Last edited by RogHelt; 02-21-2011 at 02:45 PM.
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Old 02-21-2011, 03:07 PM   #6
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There are some distinct percentage steps that Calibre will, on long conversions, spend quite some time on. The 67% mark is one of them, I don't remember the rest.
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Old 02-21-2011, 03:19 PM   #7
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There are some distinct percentage steps that Calibre will, on long conversions, spend quite some time on. The 67% mark is one of them, I don't remember the rest.
I'm only too happy to say that THE CONVERSION HAS FINALLY COMPLETED!!!!

It took a little over an hour, but everything turned out perfectly! I didn't realize (though logic should have prevailed, due to the size of my book) that it would take as long as it did, as I'm used to 1-2 minutes for most of my library.

Thanks again to one and all -- especially the wonderful developers of Calibre!

PS: donation forthcoming...
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Old 12-16-2012, 04:30 PM   #8
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I thought my conversion was getting hung up too. It's a huge anatomy text and it slowed down at exactly 67%. It's good to know this is normal. I'll try it again.
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