Mobileread
DJVU to EPUB conversion
#1  Ivor3648 03-16-2011, 04:06 PM
Are there any plans for a DJVU to EPUB converter within Calibre? I would like to read DJVU files on my PRS 505.

Thanks

Ivor
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#2  kovidgoyal 03-16-2011, 04:28 PM
No, there aren't
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#3  poco06 11-11-2011, 07:18 AM
Hello,
What could be the best way to convert a DJVU file in EPUB?
Is tere some specific software that can manage this?

Many thanks
Best regards
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#4  ldolse 11-11-2011, 08:28 AM
Djvu is an image based format, there is no way to convert it to ePub automatically. If you're desperate and willing to put some serious effort into it you could probably convert djvu to jpg/tiff files (google for utils), and then pass those files over to OCR software like ABBYY finereader. Calibre can then convert the html created by the OCR software to ePub.
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#5  dwig 11-11-2011, 11:37 AM
Quote ldolse
...If you're desperate and willing to put some serious effort into it you could probably convert djvu to jpg/tiff files...
If at all possible, avoid converting to JPEG files. The JPEG compression artifacts will only make the OCR more problematic. Use only TIFF, GIF, BMP or other format that doesn't use a lossy compression method.
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#6  ab7vf 11-11-2011, 02:47 PM
Maybe djview4 for djvu>pdf ... ??? for pdf>epub

Jim
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#7  Starson17 11-11-2011, 04:22 PM
I read djvu files on my Android phone with EBookDroid. Most are multi-column textbooks, with text boxes, sample code, equations, inserted photos, footnotes and the like that would convert very poorly even if I had them in PDF. It certainly depends on your source book, but from my experience, PDF conversion sucks for most source material, and djvu tends to be the suckiest type of source material there is.

Going djvu to image-PDF to OCR-PDF to ebook might work in theory, but I'd buy a djvu compatible ereader (any Android device) or stop at the image-PDF and read in PDF if I wanted this to work in practice.
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