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Old 12-03-2010, 04:27 PM   #1
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Help: pdf to epub conversion in Calibre splits paragraphs

Every time I try to convert one of my PDF files to EPUB, I am getting output that splits every paragraph into separate paragraphs of 1-2 lines each.

For instance, a PDF file that looks like this:


Raw violence clawed at Lyon's self-control, his beast's instincts begging to rip the asshole's throat out. His control, battered by their increasingly critical situation, snapped. The tip of his fingers burned a moment before his claws sprang out. With a growl, he shifted both his blades to one hand while he whirled and sank the claws of his other in the man's neck as he slammed him against the rock.

Blood trickled down Jag's throat, but no fear flickered in his eyes, only a spark of malicious amusement that he'd pushed Lyon too far. Even if Lyon completely lost it, he'd be hard-pressed to do Jag any real damage. Physically, they were a match, Shape-shifters simply didn't break that easily.


ends up in EPUB looking like this:

Raw violence clawed at Lyon's self-control, his beast's instincts begging to rip the asshole's

throat out. His control, battered by their increasingly critical situation, snapped. The tip of his

fingers burned a moment before his claws sprang out. With a growl, he shifted both his blades to

one hand while he whirled and sank the claws of his other in the man's neck as he slammed him

against the rock.

Blood trickled down Jag's throat, but no fear flickered in his eyes, only a spark of malicious

amusement that he'd pushed Lyon too far. Even if Lyon completely lost it, he'd be hard-pressed

to do Jag any real damage. Physically, they were a match, Shape-shifters simply didn't break that

easily.


The code on the output epub shows <p> and </p> breaks were inserted after each separate "paragraph". Does anybody know what I'm doing wrong here? I have a LOT of pdf files that I need to convert. Help is appreciated.
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Old 12-03-2010, 04:35 PM   #2
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I can't address the pdf problem, but as for the duplicate post you couldn't delete, report your own second post to the mods (the little ! just to the right of the Karma button) and tell them you have an accidental duplicate you need deleted. I think they appreciate having simple duplicates to deal with instead of borderline spammers.
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Old 12-03-2010, 04:35 PM   #3
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Quote:
Originally Posted by leday View Post
[B]Every time I try to convert one of my PDF files to EPUB, I am getting output that splits every paragraph into separate paragraphs of 1-2 lines each.
You need to adjust the pdf unwrap factor.
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Old 12-03-2010, 04:40 PM   #4
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Quote:
Originally Posted by Starson17 View Post
You need to adjust the pdf unwrap factor.
Sorry for being such a newbie about this, but how do I adjust this and what do I adjust this to?
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Old 12-03-2010, 05:02 PM   #5
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Quote:
Originally Posted by leday View Post
Sorry for being such a newbie about this, but how do I adjust this and what do I adjust this to?
The PDF unwrap factor is under Preferences - Input Options - PDF input 0.45 is a good place to start.
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Old 12-03-2010, 05:15 PM   #6
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OK. Tried that, not working. Tried many different numbers from .5 all the way to 1.0 and it STILL inserted extraneous paragraph breaks in the middle of lines. No effect whatsoever. If there are any other ideas I could try I would be really grateful.
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Old 12-03-2010, 08:06 PM   #7
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I think that you need to consider reducing the value! I think as it gets smaller it is less likely to split lines. I could be wrong though!
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Old 12-03-2010, 09:53 PM   #8
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anything above 0.5 will probably not work. Values that will work are pretty much 0.01 up to 0.5.

That said, I think you may be changing this in the wrong place. The place Dwanthy pointed you too is the global setting - you should set 0.45 under the global settings. However, any time you convert a book it takes the global settings at that moment and hard-codes them for that book. I suspect your book is still hard-coded to 0.0. So start a new conversion, which will bring you to the conversion options for that book. NOW go to pdf input (inside that conversion settings window), and change the setting there to 0.45.

That said, if 0.45 didn't work in the book's own conversion settings there may be something weird with your document. You could open a bug at bugs.calibre-ebook.com for a look. Can't guarantee it will get addressed, a lot of the more obscure pdf bugs are getting punted to the next gen pdf engine, but there is a chance it's a simple fix.

Last edited by ldolse; 12-03-2010 at 09:56 PM.
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Old 12-04-2010, 07:55 AM   #9
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If nothing seems to work, you might get a hold of Mobipocket Creator that will go from PDF to HTML. You can look at the HTML and see what is happening, correct it and then convert from the HTML.
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Old 12-04-2010, 11:48 AM   #10
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I tried changing it in the global place you mentioned, again not working. However, I think I have found a workaround, that has worked for 3 books now. I converted the pdf to a rtf file and opened it in Word, and that worked with the paragraph wrapping. I then corrected any spelling errors that were in the original file and saved, and reconverted it back to EPUB. Then opened that up in Sigil to create a TOC and any other tweaks that I might like, saved that and sent it to the Nook. (Of course I then had to tweak the epub file so that the cover art would be recognized, but that's another story in another thread.....). Lot of steps, but it works so far. I just can't figure out how to get Calibre to do this by itself without having to go to RTF/Word to get rid of the extra paragraph breaks that Calibre put in when converting the PDF file.
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Old 04-04-2013, 11:42 PM   #11
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Smile

Not sure if this is too late, but I found the solution in case anyone is still interested. I was having the same problem where each paragraph became 1-2 lines
Solution:
When you select the book and click on convert, click on heuristic processing.
Select Enable heuristic processing
Make sure the unwrap lines is selected and change the factor to .20
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Old 04-05-2013, 12:55 AM   #12
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Quote:
Originally Posted by Rocksy View Post
Not sure if this is too late, but I found the solution in case anyone is still interested. I was having the same problem where each paragraph became 1-2 lines
Solution:
When you select the book and click on convert, click on heuristic processing.
Select Enable heuristic processing
Make sure the unwrap lines is selected and change the factor to .20
.20 sounds way too aggressive for most books.
How much Calibre conversion experience do you have?
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Old 04-05-2013, 09:45 AM   #13
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None whatsoever! I'm new to all of this, eBooks, eReaders, etc. My eBooks were very slow between pages and I figured maybe if I converted them from pdf to epub, that might help. When I converted them, the slowness was fixed but each paragraph was 1 to 2 lines. I saw this post when researching this issue and played around with the numbers in the settings. Since the default was .40, I thought I'd try to change it to half to see if it makes a difference. When that worked, I figured it's working now so I just let it be
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Old 09-15-2013, 03:10 PM   #14
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Actually, .20 worked for me on some particularly difficult pdfs that were splitting the sentences into new paragraphs 1/2 way through them. Thanks for the help!
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