updated book covers not showing in books - Page 2

user743 · 05-08-2014, 02:10 AM

I'm taking from experience. try it yourself.

Open a word docx file and change one letter. save. It should save before you blink, no mater how big the file is. Now open a epub/azw3 in the calibre editor. Change one letter and save. The bigger the file - the longer it will take.

If your still not convinced, do the same as above and have the file browser open the same time. By the docx you wont see any deference. But by the epub you'll see a second file, with a random name, appear temporarily.

The only practical difference (besides the time) is if the editor hangs in middle of saving (because the file was to big

). A docx file will be partially saved. A epub will have the original and half of the new file (probably corrupt).

BTW when i said big i meant 200 mb = at least 2 minutes to save, no matter how little i edit.

cybmole · 05-08-2014, 03:26 AM

yes, but that observed delay is caused by the rezip operation, it is not caused by the hard drive file management process.

You are observing a temp file name as created by winzip or similar sub-contracted program. In fact with word docs there is a switch from a file name with a dollar sign at the front to one without (you see that temp file in documents folder whenever you have an open document )

My pin still has more dancing angels than yours

what's in a 200MB epub to cause that file size anyway - an entire Tate gallery or the complete works of Shakespeare + Dickens + friends omnibus ???

Anyway - paste it all into a a 200MB+ word doc & test save of that , that probably saves slowly on your PC also.

I will concede that MS office may do smart partial saves as-you-go - so the final save is relatively quick.

but you can't have it wit both ways with epub - you admit thata temp file with a temp name is written, then renamed when done , so there's no way to end up with a 1/2 new 1/2 old corrupt epub, unless you use really bad software. if the file operation is not completed because your PC crashes then the old version should still be there and the new version should simply be lost

BetterRed · 05-08-2014, 03:44 AM

Some file synch software has options to only sync the blocks that changed, the ones I use have that - rsync and goodsync, and no doubt many others do to. And some (all ?) of the cloud sync products have a similar option, Skydrive does, so does The Box.

But in that case its main purpose is to reduce network load, if during a normal business day you add/change a few accounts and transactions (3MB) to a 300GB MySql accounts payable database, then you probably wouldn't want to sync the whole enchilada every night to your disaster recover site.

BTW a .docx is a rebadged .zip just like a .epub. Any difference in speed is in the application. Word (33 years and who knows how many man decades) v Calibre Book Editor (33 weeks and probably fewer man weeks). BTW Word didn't come out of the blue, any more than Calibres Book Editor did; Word descends from Xerox Bravo, one of its developers was Charles Simonyi, who went to MS to write Word. First version of Word ran on Xenix.

BR

user743 · 05-08-2014, 07:29 AM

Ms word (non commercial use) cant handle a fraction of it!

It's not English. I never tried it on my kindle yet, and it's not ready. I'll probably have to split it for a ereader to handle it

(It's not right to turn this discussion to ms word file sizes or this ebook. If you want you can start a new thread or pm me.)

Vortex · 05-21-2014, 05:51 PM

When you open an epub you've downloaded an updated cover for, should the Calibre reader display the new cover or the old one which is still in the epub? Mine displays the old one but I'm told it should be the new. Is there a setting for this somewhere?

itimpi · 05-21-2014, 05:56 PM

Quote:

Originally Posted by Vortex

When you open an epub you've downloaded an updated cover for, should the Calibre reader display the new cover or the old one which is still in the epub? Mine displays the old one but I'm told it should be the new. Is there a setting for this somewhere?

I think that is expected behaviour?

If you run Polish Books or the Modify ePub plugin on the file first then you will get the new cover.

eschwartz · 05-22-2014, 07:13 PM

Quote:

Originally Posted by Vortex

When you open an epub you've downloaded an updated cover for, should the Calibre reader display the new cover or the old one which is still in the epub? Mine displays the old one but I'm told it should be the new. Is there a setting for this somewhere?

As itimpi said; downloading metadata will update the calibre database, but the changes will not be written to the ebook file until you save to disk/send to device/Polish/use the Modify Epub plugin/edit the book wih update metadata checked.

05-08-2014, 02:10 AM	#16
user743 Addict Posts: 243 Karma: 44444 Join Date: Mar 2014 Device: Kindle PW2 special offers removed by Amazon for FREE	I'm taking from experience. try it yourself. Open a word docx file and change one letter. save. It should save before you blink, no mater how big the file is. Now open a epub/azw3 in the calibre editor. Change one letter and save. The bigger the file - the longer it will take. If your still not convinced, do the same as above and have the file browser open the same time. By the docx you wont see any deference. But by the epub you'll see a second file, with a random name, appear temporarily. The only practical difference (besides the time) is if the editor hangs in middle of saving (because the file was to big ). A docx file will be partially saved. A epub will have the original and half of the new file (probably corrupt). BTW when i said big i meant 200 mb = at least 2 minutes to save, no matter how little i edit. Last edited by user743; 05-08-2014 at 02:36 AM.

05-08-2014, 03:26 AM	#17
cybmole Wizard Posts: 3,720 Karma: 1759970 Join Date: Sep 2010 Device: none	yes, but that observed delay is caused by the rezip operation, it is not caused by the hard drive file management process. You are observing a temp file name as created by winzip or similar sub-contracted program. In fact with word docs there is a switch from a file name with a dollar sign at the front to one without (you see that temp file in documents folder whenever you have an open document ) My pin still has more dancing angels than yours what's in a 200MB epub to cause that file size anyway - an entire Tate gallery or the complete works of Shakespeare + Dickens + friends omnibus ??? Anyway - paste it all into a a 200MB+ word doc & test save of that , that probably saves slowly on your PC also. I will concede that MS office may do smart partial saves as-you-go - so the final save is relatively quick. but you can't have it wit both ways with epub - you admit thata temp file with a temp name is written, then renamed when done , so there's no way to end up with a 1/2 new 1/2 old corrupt epub, unless you use really bad software. if the file operation is not completed because your PC crashes then the old version should still be there and the new version should simply be lost Last edited by cybmole; 05-08-2014 at 03:32 AM.

05-08-2014, 03:44 AM	#18
BetterRed null operator (he/him) Posts: 21,733 Karma: 29711016 Join Date: Mar 2012 Location: Sydney Australia Device: none	Some file synch software has options to only sync the blocks that changed, the ones I use have that - rsync and goodsync, and no doubt many others do to. And some (all ?) of the cloud sync products have a similar option, Skydrive does, so does The Box. But in that case its main purpose is to reduce network load, if during a normal business day you add/change a few accounts and transactions (3MB) to a 300GB MySql accounts payable database, then you probably wouldn't want to sync the whole enchilada every night to your disaster recover site. BTW a .docx is a rebadged .zip just like a .epub. Any difference in speed is in the application. Word (33 years and who knows how many man decades) v Calibre Book Editor (33 weeks and probably fewer man weeks). BTW Word didn't come out of the blue, any more than Calibres Book Editor did; Word descends from Xerox Bravo, one of its developers was Charles Simonyi, who went to MS to write Word. First version of Word ran on Xenix. BR Last edited by BetterRed; 05-08-2014 at 04:12 AM.

05-08-2014, 07:29 AM	#19
user743 Addict Posts: 243 Karma: 44444 Join Date: Mar 2014 Device: Kindle PW2 special offers removed by Amazon for FREE	Ms word (non commercial use) cant handle a fraction of it! It's not English. I never tried it on my kindle yet, and it's not ready. I'll probably have to split it for a ereader to handle it (It's not right to turn this discussion to ms word file sizes or this ebook. If you want you can start a new thread or pm me.) Last edited by user743; 05-08-2014 at 07:34 AM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
HDX Book covers not showing up?	tosk	Kindle Fire	8	05-13-2014 03:49 PM
Book covers not showing	jlynton	Kobo Reader	9	05-19-2013 12:44 AM
Book Covers not showing up	seacity1	Devices	2	05-15-2013 01:06 PM
Classic Book covers not showing up in ADE library?	tiniree	Barnes & Noble NOOK	1	10-04-2010 01:43 PM
Book Covers not showing in Stanza	tyche	Calibre	5	04-07-2010 11:12 AM

05-21-2014, 05:51 PM	#20
Vortex Groupie Posts: 171 Karma: 10 Join Date: Dec 2008 Device: Likebook Mars	When you open an epub you've downloaded an updated cover for, should the Calibre reader display the new cover or the old one which is still in the epub? Mine displays the old one but I'm told it should be the new. Is there a setting for this somewhere?

Advert

Advert