epub to fb2

larkahn · 09-15-2019, 02:56 AM

Whenever I try to convert epub to fb2, the job status quickly reaches and remains at 67%. After becoming frustrated, I downloaded Hamster. I have stopped using it since learning about the GPL violation. I recently downloaded Any EBook Converter and note that it too is based on Calibre but I don't know if it meets Calibres policies. My question is that while both Hamster and Any EBook Converter took anywhere from 10 to 20 minutes to convert a book, after 5 hours Calbre remains stuck at 67%. I don't mind if it will take a long time to convert a book and do not want to use software which is violating Calibre's policies. I also would prefer not to do conversions online. Any suggestions would be appreciated. I should note that the files I'm trying to convert to do have a lot of images and vary in size, with some as small as 6 mb or 9 mb, with a few at 28 mb.

I have a Pocketbook Reader which runs Linux. Unfortunately, images in epubs often are shown as a very small size and cannot be enlarged as in Android based readers or tablets. Converting to fb2 changes the image size to fit the width of the screen. The Pocketbook support people have confirmed the problem. This is the reason I'm doing the conversions.

Bookstooge · 09-15-2019, 08:07 AM

I would highly recommend letting ONE book conversion from calibre run as long as it needs to to make sure it finishes. Then others can determine if there is an actual problem or if Calibre is just taking a long time (which seems to happen with books with lots of images).

larkahn · 09-15-2019, 08:59 AM

Quote:

Originally Posted by Bookstooge

I would highly recommend letting ONE book conversion from calibre run as long as it needs to to make sure it finishes. Then others can determine if there is an actual problem or if Calibre is just taking a long time (which seems to happen with books with lots of images).

Thanks. I'll try that. I just noticed that one of my epub files is over 60 mb. Ouch! I guess I'll have to find out whether it's just taking a long time or whether Calibre is choking on such a large size.

BetterRed · 09-15-2019, 05:36 PM

calibre conversions have been known to take over 24 hours, it's not a function of file size, it's a function of complexity, and it's a stepwise process rather than linear, and 67% is one of the - 'rest points'.

BR

kovidgoyal · 09-15-2019, 09:09 PM

67% is where the output format plugin starts running. Many output plugins dont provide progress updates, so it appears to "stick" there.

09-15-2019, 02:56 AM	#1
larkahn Member Posts: 16 Karma: 10 Join Date: Jul 2010 Device: PocketBook InkPad 3/Galaxy A31 phone/Galaxy Tab S6 Lite tablet	epub to fb2 Whenever I try to convert epub to fb2, the job status quickly reaches and remains at 67%. After becoming frustrated, I downloaded Hamster. I have stopped using it since learning about the GPL violation. I recently downloaded Any EBook Converter and note that it too is based on Calibre but I don't know if it meets Calibres policies. My question is that while both Hamster and Any EBook Converter took anywhere from 10 to 20 minutes to convert a book, after 5 hours Calbre remains stuck at 67%. I don't mind if it will take a long time to convert a book and do not want to use software which is violating Calibre's policies. I also would prefer not to do conversions online. Any suggestions would be appreciated. I should note that the files I'm trying to convert to do have a lot of images and vary in size, with some as small as 6 mb or 9 mb, with a few at 28 mb. I have a Pocketbook Reader which runs Linux. Unfortunately, images in epubs often are shown as a very small size and cannot be enlarged as in Android based readers or tablets. Converting to fb2 changes the image size to fit the width of the screen. The Pocketbook support people have confirmed the problem. This is the reason I'm doing the conversions.

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09-15-2019, 08:07 AM	#2
Bookstooge Guru Posts: 760 Karma: 2090886 Join Date: May 2019 Device: Kindle Oasis 1st Gen	I would highly recommend letting ONE book conversion from calibre run as long as it needs to to make sure it finishes. Then others can determine if there is an actual problem or if Calibre is just taking a long time (which seems to happen with books with lots of images).

09-15-2019, 05:36 PM	#4
BetterRed null operator (he/him) Posts: 20,570 Karma: 26954694 Join Date: Mar 2012 Location: Sydney Australia Device: none	calibre conversions have been known to take over 24 hours, it's not a function of file size, it's a function of complexity, and it's a stepwise process rather than linear, and 67% is one of the - 'rest points'. BR

09-15-2019, 09:09 PM	#5
kovidgoyal creator of calibre Posts: 43,858 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	67% is where the output format plugin starts running. Many output plugins dont provide progress updates, so it appears to "stick" there.