EPUB output - Page 26

Student1 · 03-03-2009, 08:42 AM

Quote:

Originally Posted by kovidgoyal

@Student1

That's probably from a <pre> tag in the HTML. Unfortunately AFAIK you can't control the line wrapping with CSS

What would then be my best bet to solve this issue?

Also in a similar context, when converting pdf or html to epub a lot of the link do not work properly on the divice (prs-505). Works fine in the viewer. Most of the time when its a file that has to be reformated the links will be all screwed up, is this a limitation of the device?

llasram · 03-03-2009, 10:07 AM

Quote:

Originally Posted by Student1

What would then be my best bet to solve this issue?

Actually, I'd check your CSS. I've seen similar results when the CSS specifies a fixed-width layout wider than the window / Reader display. If that's the case, you can fix it either by modifying the source CSS or with --override-css.

Student1 · 03-03-2009, 03:42 PM

Thanks i ll check on the web so see what commands are available for the overide... and cross my fingers

!

Amalthia · 03-09-2009, 03:45 PM

does anyone know how to remove the tiny numbers that kind of float next to the story when you're reading an epub book?

Also, I have an ebook when I convert it to LRF there were about 1000 pages, when I converted the same file to Epub the page count went down to 453...I checked and it looks like everything is there but I just want to check to know if this is normal? or if I need to look more closely to see if I did something wrong.

kovidgoyal · 03-09-2009, 03:52 PM

the way LRF and EPUB count the number of pages ina an ebook is different.

starrigger · 03-10-2009, 03:21 AM

Kovid, I'm emailing you another book with an epub conversion problem, chapters being truncated in midsentence. Just sent it.

Student1 · 03-10-2009, 09:59 PM

Is it safe to do a batch convert to epub and expect all the books to be pretty much perfect or are there still some problems?

kovidgoyal · 03-10-2009, 10:02 PM

look at the tickets in te calibre trac with component EPUB Output to see the state of calibre's EPUB support.

Generally speaking, it is possible to produce EPUB files that wont work well on the SONY reader, though they work fine in calibre's EPUB viewer.

Producing files that dont work well in calibre's EPUB viewer is much harder.

Student1 · 03-10-2009, 10:28 PM

Thanks for the info! I'll wait a bit to make the jump! But definelty will be very nice once all the bugs are ironed out

!

pepak · 03-15-2009, 05:27 AM

Two problems with HTML2EPUB and images:

1) I am using --cover=cover.jpg to instruct HTML2EPUB to insert a cover page. The cover page does get inserted into the EPUB file, ebook-viewer can display it, but Sony Reader does not - it just takes a long time to render an empty page. What could be the reason?

2) Can HTML2EPUB resize large images to fit Reader's screen? Right now it simply keeps the original resolution, which prevents the reader from displaying the whole image. I expect I could solve that with CSS (though it would mean assigning a different class to large images and different class to small images), but it has an added disadvantage of producing huge files that render slowly (I do want full-color full-resolution images for my backups, but on my Reader, grayscale and lower resolution would be better).

kovidgoyal · 03-15-2009, 01:34 PM

Quote:

Originally Posted by pepak

Two problems with HTML2EPUB and images:

1) I am using --cover=cover.jpg to instruct HTML2EPUB to insert a cover page. The cover page does get inserted into the EPUB file, ebook-viewer can display it, but Sony Reader does not - it just takes a long time to render an empty page. What could be the reason?

If your image is jpeg2000, the reader wont display it, other than that, I can't think of anything.

2) Can HTML2EPUB resize large images to fit Reader's screen? Right now it simply keeps the original resolution, which prevents the reader from displaying the whole image. I expect I could solve that with CSS (though it would mean assigning a different class to large images and different class to small images), but it has an added disadvantage of producing huge files that render slowly (I do want full-color full-resolution images for my backups, but on my Reader, grayscale and lower resolution would be better).

I don't really like the idea of making epub files that device specific, so no.

pepak · 03-15-2009, 01:49 PM

Quote:

Originally Posted by kovidgoyal

If your image is jpeg2000, the reader wont display it, other than that, I can't think of anything.

It's not. Regular JPEG. Large, though (600 DPI, 24bit color).

Quote:

I don't really like the idea of making epub files that device specific, so no.

It would of course be an option.

kovidgoyal · 03-15-2009, 02:00 PM

Easy to test, just make a smaller one.

I haven't come up against image size limits in the 700, but IIRC, there is an image file size limit above which ADE will refuse to display images as well.

As for an option to downsample images, it's certainly a possibility, but you've picked a bad time to ask as calibre's conversion subsystem is undergoing a re-organization and new features are on hold until that is complete

pepak · 03-15-2009, 04:03 PM

Quote:

Originally Posted by kovidgoyal

Easy to test, just make a smaller one.

Just did, and it started working now.

Quote:

As for an option to downsample images, it's certainly a possibility, but you've picked a bad time to ask as calibre's conversion subsystem is undergoing a re-organization and new features are on hold until that is complete

I am in no hurry - I don't expect to switch to EPUB sooner than a new firmware (with full justification, better stability and faster page turns) appears (if that ever happens). I was just testing my setup for converting all HTML books into LRF/EPUB with one command :-)

In fact, all I need is a simple YES-NO answer: Do you plan to include optimization for specific devices within say 6 months? YES will be great, but NO is just as good - due to the process I use to create my ebooks, I can just as well add an image-optimalization step to my frontend. It's not as if it were a lot of code, after all...

kovidgoyal · 03-15-2009, 04:12 PM

Sure adding image optimization for devices is trivial to do (at least to the extent of resizing the images, I doubt I will downscale to gray though)

03-03-2009, 03:42 PM	#378
Student1 Groupie Posts: 159 Karma: 170 Join Date: Feb 2009 Device: PRS-505	Thanks i ll check on the web so see what commands are available for the overide... and cross my fingers ! Last edited by Student1; 03-03-2009 at 03:49 PM.

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03-09-2009, 03:45 PM	#379
Amalthia Wizard Posts: 1,190 Karma: 32370 Join Date: Jan 2007 Location: Anchorage, AK Device: Sony Reader PRS-505, PRS-650, PRS-T3, Pocketbook HD2	does anyone know how to remove the tiny numbers that kind of float next to the story when you're reading an epub book? Also, I have an ebook when I convert it to LRF there were about 1000 pages, when I converted the same file to Epub the page count went down to 453...I checked and it looks like everything is there but I just want to check to know if this is normal? or if I need to look more closely to see if I did something wrong.

03-09-2009, 03:52 PM	#380
kovidgoyal creator of calibre Posts: 45,609 Karma: 28549044 Join Date: Oct 2006 Location: Mumbai, India Device: Various	the way LRF and EPUB count the number of pages ina an ebook is different.

03-10-2009, 03:21 AM	#381
starrigger Jeffrey A. Carver Posts: 1,355 Karma: 1107383 Join Date: Aug 2008 Location: Massachusetts, USA Device: Lenovo Yoga Tab Plus, Droid phone, Nook HD+	Kovid, I'm emailing you another book with an epub conversion problem, chapters being truncated in midsentence. Just sent it.

03-10-2009, 09:59 PM	#382
Student1 Groupie Posts: 159 Karma: 170 Join Date: Feb 2009 Device: PRS-505	Is it safe to do a batch convert to epub and expect all the books to be pretty much perfect or are there still some problems?

03-10-2009, 10:02 PM	#383
kovidgoyal creator of calibre Posts: 45,609 Karma: 28549044 Join Date: Oct 2006 Location: Mumbai, India Device: Various	look at the tickets in te calibre trac with component EPUB Output to see the state of calibre's EPUB support. Generally speaking, it is possible to produce EPUB files that wont work well on the SONY reader, though they work fine in calibre's EPUB viewer. Producing files that dont work well in calibre's EPUB viewer is much harder.

03-10-2009, 10:28 PM	#384
Student1 Groupie Posts: 159 Karma: 170 Join Date: Feb 2009 Device: PRS-505	Thanks for the info! I'll wait a bit to make the jump! But definelty will be very nice once all the bugs are ironed out !

03-15-2009, 05:27 AM	#385
pepak Guru Posts: 610 Karma: 4150 Join Date: Mar 2008 Device: Sony Reader PRS-T3, Kobo Libra H2O	Two problems with HTML2EPUB and images: 1) I am using --cover=cover.jpg to instruct HTML2EPUB to insert a cover page. The cover page does get inserted into the EPUB file, ebook-viewer can display it, but Sony Reader does not - it just takes a long time to render an empty page. What could be the reason? 2) Can HTML2EPUB resize large images to fit Reader's screen? Right now it simply keeps the original resolution, which prevents the reader from displaying the whole image. I expect I could solve that with CSS (though it would mean assigning a different class to large images and different class to small images), but it has an added disadvantage of producing huge files that render slowly (I do want full-color full-resolution images for my backups, but on my Reader, grayscale and lower resolution would be better).

03-15-2009, 02:00 PM	#388
kovidgoyal creator of calibre Posts: 45,609 Karma: 28549044 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Easy to test, just make a smaller one. I haven't come up against image size limits in the 700, but IIRC, there is an image file size limit above which ADE will refuse to display images as well. As for an option to downsample images, it's certainly a possibility, but you've picked a bad time to ask as calibre's conversion subsystem is undergoing a re-organization and new features are on hold until that is complete

03-15-2009, 04:12 PM	#390
kovidgoyal creator of calibre Posts: 45,609 Karma: 28549044 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Sure adding image optimization for devices is trivial to do (at least to the extent of resizing the images, I doubt I will downscale to gray though)