convert: png treated as txt

wuebbel · 08-23-2019, 03:56 AM

I'm trying to convert an epub to pdf in calibre. The conversion fails with:

assets/img.png contains data in TXT format converting to HTML
Converting assets/tip-small.png ...
Failed to run pipe worker with command: from calibre.gui2.viewer.printing import do_print; do_print()
Python function terminated unexpectedly
'utf8' codec can't decode byte 0x89 in position 0: invalid start byte. -- Note: Markdown only accepts unicode input! (Error Code: 1)

Obviously, calibre is interpreting the PNG as text, which then fails.

This is on a fresh install of calibre 3.46.0 on Windows 10. Conversion of a different epub worked.

Any ideas?

Thanks Frank

kovidgoyal · 08-23-2019, 04:56 AM

It's ot calibrethatis interpreting the PNG as text it isthe EPUB file telling it to do that via its manifest. Openthe epub file in the calibre editor and fixthe manifest entry by eiditing the opf file.

wuebbel · 08-23-2019, 05:21 AM

Quote:

Originally Posted by kovidgoyal

fix the manifest entry by editing the opf file.

Correct. I wonder why a commercial epub file contains this error. Thanks a lot! Fixed my problem.

Frank

08-23-2019, 03:56 AM	#1
wuebbel Junior Member Posts: 2 Karma: 10 Join Date: Aug 2019 Device: Kindle	convert: png treated as txt I'm trying to convert an epub to pdf in calibre. The conversion fails with: assets/img.png contains data in TXT format converting to HTML Converting assets/tip-small.png ... Failed to run pipe worker with command: from calibre.gui2.viewer.printing import do_print; do_print() Python function terminated unexpectedly 'utf8' codec can't decode byte 0x89 in position 0: invalid start byte. -- Note: Markdown only accepts unicode input! (Error Code: 1) Obviously, calibre is interpreting the PNG as text, which then fails. This is on a fresh install of calibre 3.46.0 on Windows 10. Conversion of a different epub worked. Any ideas? Thanks Frank

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08-23-2019, 04:56 AM	#2
kovidgoyal creator of calibre Posts: 43,860 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	It's ot calibrethatis interpreting the PNG as text it isthe EPUB file telling it to do that via its manifest. Openthe epub file in the calibre editor and fixthe manifest entry by eiditing the opf file.

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