Viewer (suddenly) not working with epub - Page 3

JSWolf · 08-18-2022, 02:44 PM

Quote:

Originally Posted by PeterT

Some people have a legitimate reason for wanting Windows N and calibre.

What might the reason be? Once you install the mediapack, it's no longer Windows 10 N.

gbm · 08-18-2022, 03:48 PM

Quote:

These editions of Windows exist entirely for legal reasons. In 2004, the European Commission found Microsoft had violated European antitrust law, abusing its monopoly in the market to hurt competing video and audio applications. The EU fined Microsoft €500 million and required Microsoft to offer a version of Windows without Windows Media Player. Consumers and PC manufacturers can choose this version of Windows and install their preferred multimedia applications without Windows Media Player also being present. It’s not the only version of Windows offered in the European Union—it’s just an option that has to be available. This is why the “N” editions are only available in Europe.

bernie

Quote:

Originally Posted by JSWolf

What might the reason be? Once you install the mediapack, it's no longer Windows 10 N.

JSWolf · 08-18-2022, 03:52 PM

And as we have seen, not having Windows Media Player can cause problems. I don't use Windows Media Player. I use other media players instead like Plex, VLC, and Foobar2000. But I do need the media stuff as I do use Skype to make overseas calls and as we have seen, to use Calibre's Viewer.

TornSoul · 08-21-2022, 01:19 PM

So what should we expect going forward?

Those of us on Win N can no longer use Calibre 6 and above?
(I. e. have to stay on Calibre 5 which works just fine on Win N)

PeterT · 08-21-2022, 03:23 PM

Quote:

Originally Posted by TornSoul

So what should we expect going forward?

Those of us on Win N can no longer use Calibre 6 and above?
(I. e. have to stay on Calibre 5 which works just fine on Win N)

Unfortunately bearing any QT6 changes, either stay on calibre 5, or install Media Pack and calibre 6.

Sent from my Pixel 4a using Tapatalk

jluaioyj · 09-08-2022, 02:33 PM

The Viewer annoyingly hangs in several versions up to the current v6.4 on Linux (Mint 20.3 with Mate), so I'm having to use Foliate instead which is actually better, but I can't see to be able to reopen files from its library, so I have to launch it from the dubious "Open With" right-click sub-menu on the "EPUB" item in the preview "Format" field.

BetterRed · 09-08-2022, 06:48 PM

Quote:

Originally Posted by jluaioyj

The Viewer annoyingly hangs in several versions up to the current v6.4 on Linux (Mint 20.3 with Mate), so I'm having to use Foliate instead which is actually better, but I can't see to be able to reopen files from its library, so I have to launch it from the dubious "Open With" right-click sub-menu on the "EPUB" item in the preview "Format" field.

Why 'dubious', I started using the built in Open With feature the day it was released - the next day I removed the Open With optional plugin I'd used previously.

If you don't want calibre to use its viewer for a particular format uncheck its entry in the Preferences->Behaviour->Use internal viewer for: list and it will invoke the default handler you have set in your OS. Then if you wanted to have the option of using calibre's ebook-viewer you could add it to the calibre Open With list - and give it a keyboard shortcut.

BR

DiapDealer · 09-23-2022, 10:26 AM

As a follow-up to this: a workaround for this issue may have found its way into the Qt 6.5, 6.4, and 6.3 codebase. Perhaps it will even be released in 6.3.3. The problem was that those wmf dlls were delay-loaded in Qt5 WebEngine, but were not delay-loaded in Qt6 6.2+ WebEngine (not at first anyway).

https://code.qt.io/cgit/qt/qtwebengi...df9b9b3a8daae6

Seems like a pretty straight-forward workaround for those who build their own Qt. I've not tested if it works yet, but hope to soon.

kovidgoyal · 09-23-2022, 11:09 AM

cool, thanks. I might rebuild the windows Qt WebEngine bundled with calibre to explicitly delay load those dlls.

DiapDealer · 09-23-2022, 01:11 PM

No problem. Hopefully it eliminates the issue with Windows N and no mediapack.

08-18-2022, 03:52 PM	#33
JSWolf Resident Curmudgeon Posts: 79,792 Karma: 146391129 Join Date: Nov 2006 Location: Roslindale, Massachusetts Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3	And as we have seen, not having Windows Media Player can cause problems. I don't use Windows Media Player. I use other media players instead like Plex, VLC, and Foobar2000. But I do need the media stuff as I do use Skype to make overseas calls and as we have seen, to use Calibre's Viewer. Last edited by JSWolf; 08-18-2022 at 03:55 PM.

09-23-2022, 10:26 AM	#38
DiapDealer Grand Sorcerer Posts: 28,588 Karma: 204624552 Join Date: Jan 2010 Device: Nexus 7, Kindle Fire HD	As a follow-up to this: a workaround for this issue may have found its way into the Qt 6.5, 6.4, and 6.3 codebase. Perhaps it will even be released in 6.3.3. The problem was that those wmf dlls were delay-loaded in Qt5 WebEngine, but were not delay-loaded in Qt6 6.2+ WebEngine (not at first anyway). https://code.qt.io/cgit/qt/qtwebengi...df9b9b3a8daae6 Seems like a pretty straight-forward workaround for those who build their own Qt. I've not tested if it works yet, but hope to soon. Last edited by DiapDealer; 09-23-2022 at 10:30 AM.

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08-21-2022, 01:19 PM	#34
TornSoul Junior Member Posts: 9 Karma: 10 Join Date: Aug 2022 Device: none	So what should we expect going forward? Those of us on Win N can no longer use Calibre 6 and above? (I. e. have to stay on Calibre 5 which works just fine on Win N)

09-08-2022, 02:33 PM	#36
jluaioyj Junior Member Posts: 9 Karma: 10 Join Date: Sep 2022 Device: Kobo Touch, Like Book Mars, Android	The Viewer annoyingly hangs in several versions up to the current v6.4 on Linux (Mint 20.3 with Mate), so I'm having to use Foliate instead which is actually better, but I can't see to be able to reopen files from its library, so I have to launch it from the dubious "Open With" right-click sub-menu on the "EPUB" item in the preview "Format" field.

09-23-2022, 11:09 AM	#39
kovidgoyal creator of calibre Posts: 45,374 Karma: 27230406 Join Date: Oct 2006 Location: Mumbai, India Device: Various	cool, thanks. I might rebuild the windows Qt WebEngine bundled with calibre to explicitly delay load those dlls.

09-23-2022, 01:11 PM	#40
DiapDealer Grand Sorcerer Posts: 28,588 Karma: 204624552 Join Date: Jan 2010 Device: Nexus 7, Kindle Fire HD	No problem. Hopefully it eliminates the issue with Windows N and no mediapack.

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