Conversion strange behaviour ....

barrydrake · 03-30-2015, 12:30 PM

Hi there ... Any of you familiar with the Bookeen Cybook Opus e-reader? I took the plaintext from this site: https://archive.org/details/revivalofreligio00reed and made it into an odt file. After editing, I imported it into Calibre and made EPUB and PDF files from it. If I put the EPUB file onto me Bookeen, and browse to the directory into which I have copied the EPUB, the Bookeen crashes with no error message and resets continually unti I plug in to my PC and remove the EPUB. If I put the PDF there, it works just fine - up to page 26 - after which all pages show as blank. Both formats read OK in the Book Reader that comes with Calibre, and using Adobe Digital Editions. The Bookeen uses Adobe software which normally works just fine.

My PC is running Linux (Mint and Ubuntu), but I am running Window ADE under wine.

I can read the PDF that I downloaded from the site all the way through, but this is based on the page scans, and not on OCRd text. I don't know enought about the EPUB format to make sense of it, but if I unzip the EPUB file I have created, it is different from most. It has no OEBPS directory, and instead puts the html files (not xtml) and the cover image in the root directory. Does this give any clues? Kind regards, Barry.

eschwartz · 03-30-2015, 12:51 PM

Sticky: How to ask a question about conversion problems

The internal file structure should not make a difference, as the specs permit the files to be anywhere. Only be convention (to make things neat, it became a habit among many) do the files go anywhere particular -- the only hard requirement is the content in META-INF.
If calibre converted it, it should work under most circumstances, but there may be a bug with your device's firmware.

It is possible the Bookeen subforum would know more than us.

theducks · 03-30-2015, 01:07 PM

Devices have segment (the piece being viewed) size limits

Older devices like Sony and my Astak choked on pieces >260K
Even if the did not choke, One huge segment caused the device to be sluggish.

Split the file
(IIRC Calibre Editor Validate does warn if it sees a oversize segment.)

BTW did you tamper with the default? Preferences:Output Options: split files larger than: (260K is the original default)

barrydrake · 03-30-2015, 03:25 PM

Thanks for that. I did the conversion with the 260K default. I've now tried changing it to an arbitrary 100K and the converted file no longer chokes the Bookeen firmware. I have another book that suffers from the same problem. I guess I know what to do this time. Thanks for your help. I'll subscribe to the Bookeen sub-forum and lurk there. Kind regards, Barry Drake.

theducks · 03-30-2015, 04:13 PM

Quote:

Originally Posted by barrydrake

Thanks for that. I did the conversion with the 260K default. I've now tried changing it to an arbitrary 100K and the converted file no longer chokes the Bookeen firmware. I have another book that suffers from the same problem. I guess I know what to do this time. Thanks for your help. I'll subscribe to the Bookeen sub-forum and lurk there. Kind regards, Barry Drake.

Is that book ALSO image rich(on those missing pages) ? Big images may grab so much RAM that the 260K that usually is fine, is too big.

If you use the EDITOR, you can just split individual sections. (I do per chapter splits, so big (>60K) is rare anyway

03-30-2015, 12:30 PM	#1
barrydrake Junior Member Posts: 5 Karma: 10 Join Date: Dec 2014 Device: bookeen	Conversion strange behaviour .... Hi there ... Any of you familiar with the Bookeen Cybook Opus e-reader? I took the plaintext from this site: https://archive.org/details/revivalofreligio00reed and made it into an odt file. After editing, I imported it into Calibre and made EPUB and PDF files from it. If I put the EPUB file onto me Bookeen, and browse to the directory into which I have copied the EPUB, the Bookeen crashes with no error message and resets continually unti I plug in to my PC and remove the EPUB. If I put the PDF there, it works just fine - up to page 26 - after which all pages show as blank. Both formats read OK in the Book Reader that comes with Calibre, and using Adobe Digital Editions. The Bookeen uses Adobe software which normally works just fine. My PC is running Linux (Mint and Ubuntu), but I am running Window ADE under wine. I can read the PDF that I downloaded from the site all the way through, but this is based on the page scans, and not on OCRd text. I don't know enought about the EPUB format to make sense of it, but if I unzip the EPUB file I have created, it is different from most. It has no OEBPS directory, and instead puts the html files (not xtml) and the cover image in the root directory. Does this give any clues? Kind regards, Barry.

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03-30-2015, 12:51 PM	#2
eschwartz Ex-Helpdesk Junkie Posts: 19,422 Karma: 85397180 Join Date: Nov 2012 Location: The Beaten Path, USA, Roundworld, This Side of Infinity Device: Kindle Touch fw5.3.7 (Wifi only)	Sticky: How to ask a question about conversion problems The internal file structure should not make a difference, as the specs permit the files to be anywhere. Only be convention (to make things neat, it became a habit among many) do the files go anywhere particular -- the only hard requirement is the content in META-INF. If calibre converted it, it should work under most circumstances, but there may be a bug with your device's firmware. It is possible the Bookeen subforum would know more than us.

03-30-2015, 01:07 PM	#3
theducks Well trained by Cats Posts: 29,779 Karma: 54830978 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	Devices have segment (the piece being viewed) size limits Older devices like Sony and my Astak choked on pieces >260K Even if the did not choke, One huge segment caused the device to be sluggish. Split the file (IIRC Calibre Editor Validate does warn if it sees a oversize segment.) BTW did you tamper with the default? Preferences:Output Options: split files larger than: (260K is the original default)

03-30-2015, 03:25 PM	#4
barrydrake Junior Member Posts: 5 Karma: 10 Join Date: Dec 2014 Device: bookeen	Thanks for that. I did the conversion with the 260K default. I've now tried changing it to an arbitrary 100K and the converted file no longer chokes the Bookeen firmware. I have another book that suffers from the same problem. I guess I know what to do this time. Thanks for your help. I'll subscribe to the Bookeen sub-forum and lurk there. Kind regards, Barry Drake.