Register Guidelines E-Books Search Today's Posts Mark Forums Read

Go Back   MobileRead Forums > E-Book Software > Calibre

Notices

Reply
 
Thread Tools Search this Thread
Old 12-15-2010, 10:44 PM   #1
Ozric
Zealot
Ozric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watch
 
Posts: 146
Karma: 10671
Join Date: Nov 2007
Device: way too many =)
[Nook Color] Are the thumbnail jpgs necessary?

Hi,

I have a Nook Color and I was wondering if the .jpg thumbnails that Calibre transfers along with each book are necessary in any way. If they're not, is there a setting that prevents that from happening on specific devices? I own multiple devices and wouldn't want to disable thumbnails for devices that might actually need them for some purpose.

Normally I wouldn't mind having the thumbnails stored on my device. But in the case of the Nook Color, if I want to browse photos, the Gallery app displays every single image it finds on the device, so I have to scroll through a bunch of thumbnails looking for the pictures that I'd like to actually look at.

Ideally, the Gallery app would allow for some user customization so I could just have it display items in specific folders or something, but alas...it's kinda primitive.
Ozric is offline   Reply With Quote
Old 12-15-2010, 11:20 PM   #2
kovidgoyal
creator of calibre
kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.
 
kovidgoyal's Avatar
 
Posts: 25,621
Karma: 4998447
Join Date: Oct 2006
Location: Mumbai, India
Device: Various
do the book covers display if the thumbnails are not sent? For example, if you copy the file manually using windows explorer.
kovidgoyal is online now   Reply With Quote
 
Enthusiast
Old 12-15-2010, 11:45 PM   #3
Ozric
Zealot
Ozric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watch
 
Posts: 146
Karma: 10671
Join Date: Nov 2007
Device: way too many =)
I tried it with one book and it worked.

There is apparently a known issue that causes some covers not to display on the Nook Color--an issue that affects a few of my books, but not most. Since the test book displayed a cover, I'd think this issue doesn't affect the validity of the test. If it hadn't displayed a cover, I wouldn't know what to think.
Ozric is offline   Reply With Quote
Old 12-15-2010, 11:54 PM   #4
kovidgoyal
creator of calibre
kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.
 
kovidgoyal's Avatar
 
Posts: 25,621
Karma: 4998447
Join Date: Oct 2006
Location: Mumbai, India
Device: Various
Hmm I've seen reports in other threads that the thumbnails are needed for covers.

See for example: http://www.mobileread.com/forums/sho...d.php?t=110001
kovidgoyal is online now   Reply With Quote
Old 12-16-2010, 07:11 AM   #5
user_none
Sigil & calibre developer
user_none ought to be getting tired of karma fortunes by now.user_none ought to be getting tired of karma fortunes by now.user_none ought to be getting tired of karma fortunes by now.user_none ought to be getting tired of karma fortunes by now.user_none ought to be getting tired of karma fortunes by now.user_none ought to be getting tired of karma fortunes by now.user_none ought to be getting tired of karma fortunes by now.user_none ought to be getting tired of karma fortunes by now.user_none ought to be getting tired of karma fortunes by now.user_none ought to be getting tired of karma fortunes by now.user_none ought to be getting tired of karma fortunes by now.
 
user_none's Avatar
 
Posts: 2,433
Karma: 950001
Join Date: Jan 2009
Location: Florida, USA
Device: Nook STR
The Nook Classic requires the thumbnail images to show covers. The Nook Color seems to be a mess when it comes to showing cover images. Sending the jpg thumbnails to the Color can be removed. However, I would rather wait for B&N to put out an update that fixes the user issues related to thumbnails first. I would hate to remove them and have people's Nook Color stop displaying them entirely.
user_none is offline   Reply With Quote
Old 12-16-2010, 01:24 PM   #6
Ozric
Zealot
Ozric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watchOzric is clearly one to watch
 
Posts: 146
Karma: 10671
Join Date: Nov 2007
Device: way too many =)
Oh yeah, in light of the current issue involving the display of covers on the Nook Color, I'm sure now isn't the best time to mess with it. Mainly I was just wondering if there was an optional Preference somewhere that would prevent Calibre from copying the thumbnails to the device.

Ideally, the Gallery app will get an update that allows for folder browsing or some sort of filtering.

EDIT:
For what it's worth, I've discovered it's a simple matter to do a *.jpg search on my device's Book folder and delete everything it finds to purge all the thumbnails. I don't know if it's really indicative of anything, but I didn't notice any changes in cover thumbnails when browsing books--books that were displaying covers before the purge still display them, and books that were not still don't display them.

Hopefully B&N straightens out this issue soon.

Last edited by Ozric; 12-16-2010 at 05:48 PM.
Ozric is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
BN rep called Nook color a 'toy', recommended original Nook RockdaMan General Discussions 156 07-02-2011 11:52 PM
Time to separate Nook & Nook Color forums! bugeyed Nook Color & Nook Tablet 27 05-20-2011 03:05 PM
Nook vs. Nook Color vs. Sony 650 mnfe Which one should I buy? 77 12-19-2010 02:39 PM
Nook Color is Here! tubemonkey Nook Color & Nook Tablet 240 11-21-2010 08:27 AM
Is Kindle or Nook good for reading .jpgs? Tialis Which one should I buy? 1 06-23-2010 02:28 PM


All times are GMT -4. The time now is 10:49 PM.


MobileRead.com is a privately owned, operated and funded community.