Editor error log

Ghitulescu · 04-12-2023, 12:09 PM

Please help me understand some aspects related to the error log, when converting an epub to another format.

Quote:

Decreased the font cmuntb.otf to 35.1% of its original size
Usupported GSUB table: The GSUB table has unknown version: 0x10001

Decreased the font Fraunces_120pt_Wonky-BoldItalic.ttf to 35.7% of its original size
Decreased the font kawoszeh.ttf to 38.4% of its original size
The font NotoSansDisplay-ExtraCondensedSemiBold.ttf is unused. Removing it.
The font Montserrat-Italic.ttf is unused. Removing it.
P

To which font applies the GSUB error? cmuntb? Fraunces? Undisclosed and not embedded (because of this error!) font?
And if the font is embedded, what is the significance? There is no much information on the web on such an error (one google page

).

This P is always the latest character in a failed attempt to convert an epub to no matter what format (in this case, IIRC, from epub to epub - I think I hoped that Calibre would "flatten out" any error may exist).
The status changed from Added links to... (I could not read it, being instantly replaced by Error) to Error.

Strangely, when converting to PDF, the "unused" fonts are no longer unused... And the cover is cover.jpg, so I cannot understand the last log entry...

Quote:

Trimming unused files from manifest...
Trimming u'CormorantSC-Regular.ttf' from manifest
Trimming u'cover.xhtml' from manifest
Creating PDF Output...
Converting input as a text based book...
The cover image has an id != "cover". Renaming to work around bug in Nook Color
P

Maybe the error is not logged before stopping. Which is the next action after "renaming the "cover"? Or it simply outputs the error because it can't change cover.jpg into cover.jpg?

In the temp folder, Calibre apparently renames the cover.jpg into some random name, like nvcr9j.
The last entry in the worker's log is:

Quote:

GlyphSizeMismatch: Size mismatch for glyph id: 17 prev_sz: 100 sz: 108

I pretty much tend to consider that one of my fonts is the culprit. Unfortunately, I cannot find anywhere the straight answer - which one, so I can replace/remove it. I use some 50 fonts (separate files for bold, italic etc.), so taking out one by one and wait 20 minutes for the error to occur is not really an option, if there would be an easy way

Thanks

DNSB · 04-12-2023, 08:57 PM

It would make things easier if you ran the epub through ScrambleEpub and then attached ti to a message here.

kovidgoyal · 04-12-2023, 11:13 PM

It's easy enough to check, delete cmuntb.otf and redo the process. It means subsetting of the GSUB table will not work, so the font will not be shrunk as much.

That P means the calibre worker process was killed, leaving the log incomplete. either the system ran out of RAM and killed it or it crashed or was killed by an antivirus or similar.

Ghitulescu · 04-13-2023, 05:46 AM

Quote:

Originally Posted by DNSB

It would make things easier if you ran the epub through ScrambleEpub and then attached ti to a message here.

I do not know what ScrambleEpub is

Google directs me to some novels in ePub format. I don't think this is what you meant.

Quote:

Originally Posted by kovidgoyal

It's easy enough to check, delete cmuntb.otf and redo the process.

So this means that the warning/error refers to the font next to which it comes.
Anyway, it was one of the fonts I processed myself with the FontForge, not cmuntb. Which one I don't know, I removed all of them in one go. Is there a sort of EpubCheck/EpubValidator for fonts, to see if there are free from errors?

Quote:

Originally Posted by kovidgoyal

It means subsetting of the GSUB table will not work, so the font will not be shrunk as much.

This is one good answer I was looking for.

Quote:

Originally Posted by kovidgoyal

That P means the calibre worker process was killed, leaving the log incomplete. either the system ran out of RAM and killed it or it crashed or was killed by an antivirus or similar.

The system ran out of memory (RAM) in this case. This is one good answer I was looking for.

Thank you all for the answers.

Quoth · 04-13-2023, 07:23 AM

Scramble ePub is a Calibre plug-in that scrambles the content but leaves the HTML and CSS as they are. Then a copyright epub can be shared without violating copyright.

If I get an error converting I first try turning off font subsetting. Fifty fonts is a lot!

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04-12-2023, 08:57 PM	#2
DNSB Bibliophagist Posts: 35,464 Karma: 145525534 Join Date: Jul 2010 Location: Vancouver Device: Kobo Sage, Forma, Clara HD, Lenovo M8 FHD, Paperwhite 4, Tolino epos	It would make things easier if you ran the epub through ScrambleEpub and then attached ti to a message here.

04-12-2023, 11:13 PM	#3
kovidgoyal creator of calibre Posts: 43,860 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	It's easy enough to check, delete cmuntb.otf and redo the process. It means subsetting of the GSUB table will not work, so the font will not be shrunk as much. That P means the calibre worker process was killed, leaving the log incomplete. either the system ran out of RAM and killed it or it crashed or was killed by an antivirus or similar.

04-13-2023, 07:23 AM	#5
Quoth the rook, bossing Never. Posts: 11,164 Karma: 85874891 Join Date: Jun 2017 Location: Ireland Device: All 4 Kinds: epub eink, Kindle, android eink, NxtPaper11	Scramble ePub is a Calibre plug-in that scrambles the content but leaves the HTML and CSS as they are. Then a copyright epub can be shared without violating copyright. If I get an error converting I first try turning off font subsetting. Fifty fonts is a lot!

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