OPDS "Failed to extract archive"

ewok2 · 01-05-2022, 03:20 PM

Hello

I have a calibre server on a Ubuntu VM.
When I try to import Comics through opds on Iphone or Ipad, sometime (for 3% of the cbz), i get an error with the message "Failed to extract archive".

When I try to open on a Linux computer the cbz file, it works fine
When I try to read the cbz on the web interface it works fine

I did not see the diference of the non working cbz and the other.
I can't have a look on the Iphone logs ;-)

Any idea of what can cause a "Failed to extract archive" on a cbz through opds?

Thanks

PeterT · 01-05-2022, 05:47 PM

Any chance they might be misnamed? A CBZ is a renamed ZIP file; while a CBR is a renamed RAR file

Sent from my Pixel 4a using Tapatalk

ewok2 · 01-06-2022, 03:42 PM

Not sure to understand your question.
The comics file is a zip of .jpg files and rename to .cbz in stead of .zip

PeterT · 01-06-2022, 05:04 PM

Quote:

Originally Posted by ewok2

Not sure to understand your question.

The comics file is a zip of .jpg files and rename to .cbz in stead of .zip

All I was suggesting is that the failing CBZs might actually be CBRs.

No other ideas; I'm out of here

Sent from my Pixel 4a using Tapatalk

kovidgoyal · 01-06-2022, 09:35 PM

This will be an issue with whatever client your using on the device to consume the OPDS feed, report it there.

ewok2 · 01-07-2022, 07:45 AM

Agree that it may be an issue on the client side, but as most of the files works, If I can't see the diference between the files that work and the files that does not wiork the client side can also say the probleme is server side ;-)

davidfor · 01-07-2022, 08:05 AM

Quote:

Originally Posted by ewok2

Agree that it may be an issue on the client side, but as most of the files works, If I can't see the diference between the files that work and the files that does not wiork the client side can also say the probleme is server side ;-)

It could be the compression method used. Have you tried unpacking one and then rezipping it?

And PeterT's suggestion was to make sure they actually where zip files and not some other compressed format. If you are producing them, they should be OK. But, if they come from elsewhere, they might be packing them with something else and renaming them incorrectly. Some tools will error on this, some will handle it with no issues.

ewok2 · 01-07-2022, 02:17 PM

Yes I made a Python script

1st that unpack a cbz to directory, rename all .jpg topage-xxx.jpg than zip it with unzip then change name to .cbz

The 2nd script before renaming try to "change" the jpg files by setting the jpeg compression to a value near but different.

And both test doesn't change anythings
All the .cbz files are Ok when trying to read with any linux application reader...

01-05-2022, 03:20 PM	#1
ewok2 Member Posts: 11 Karma: 10 Join Date: Oct 2021 Device: ipad	OPDS "Failed to extract archive" Hello I have a calibre server on a Ubuntu VM. When I try to import Comics through opds on Iphone or Ipad, sometime (for 3% of the cbz), i get an error with the message "Failed to extract archive". When I try to open on a Linux computer the cbz file, it works fine When I try to read the cbz on the web interface it works fine I did not see the diference of the non working cbz and the other. I can't have a look on the Iphone logs ;-) Any idea of what can cause a "Failed to extract archive" on a cbz through opds? Thanks

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01-05-2022, 05:47 PM	#2
PeterT Grand Sorcerer Posts: 12,324 Karma: 74007256 Join Date: Nov 2007 Location: Toronto Device: Nexus 7, Clara, Touch, Tolino EPOS	Any chance they might be misnamed? A CBZ is a renamed ZIP file; while a CBR is a renamed RAR file Sent from my Pixel 4a using Tapatalk

01-06-2022, 03:42 PM	#3
ewok2 Member Posts: 11 Karma: 10 Join Date: Oct 2021 Device: ipad	Not sure to understand your question. The comics file is a zip of .jpg files and rename to .cbz in stead of .zip

01-06-2022, 09:35 PM	#5
kovidgoyal creator of calibre Posts: 44,048 Karma: 22669822 Join Date: Oct 2006 Location: Mumbai, India Device: Various	This will be an issue with whatever client your using on the device to consume the OPDS feed, report it there.

01-07-2022, 07:45 AM	#6
ewok2 Member Posts: 11 Karma: 10 Join Date: Oct 2021 Device: ipad	Agree that it may be an issue on the client side, but as most of the files works, If I can't see the diference between the files that work and the files that does not wiork the client side can also say the probleme is server side ;-)

01-07-2022, 02:17 PM	#8
ewok2 Member Posts: 11 Karma: 10 Join Date: Oct 2021 Device: ipad	Yes I made a Python script 1st that unpack a cbz to directory, rename all .jpg topage-xxx.jpg than zip it with unzip then change name to .cbz The 2nd script before renaming try to "change" the jpg files by setting the jpeg compression to a value near but different. And both test doesn't change anythings All the .cbz files are Ok when trying to read with any linux application reader...