[Bug 238527] New: russian tags wrong after batch recompression

https://bugs.kde.org/show_bug.cgi?id=238527

           Summary: russian tags wrong after batch recompression
           Product: digikam
           Version: 1.2.0
          Platform: Gentoo Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: critical
          Priority: NOR
         Component: Batch Queue Manager
        AssignedTo: [hidden email]
        ReportedBy: [hidden email]


There are some jpeg photos with english+russian tags.
After batch recompression, russian tags looks like '????'.
I guess somewhere lost encoding.

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[Michael G. Hansen]

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--- Comment #1 from Michael G. Hansen <mike mghansen de>  2010-05-22 22:15:20 ---
Where are you storing your tags in the image? XMP? IPTC? EXIF?

Michael

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--- Comment #2 from Kostya Sha <gentoo integer gmail com>  2010-05-22 23:04:34 ---
Created an attachment (id=43808)
 --> (http://bugs.kde.org/attachment.cgi?id=43808)
screenshot

don't know, where i can check ?

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--- Comment #3 from Gilles Caulier <caulier gilles gmail com>  2010-05-25 09:41:37 ---
Michael,

Sound like in Database only... Strange.

Gilles Caulier

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--- Comment #4 from Andi Clemens <andi clemens gmx net>  2010-05-29 09:51:50 ---
Hmm for me neither tags nor captions / comments are saved when I process a file
with BQM. Is this the default behavior?

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--- Comment #5 from Gilles Caulier <caulier gilles gmail com>  2010-10-06 15:28:42 ---
Andi,

This is fixed in current implementation from svn.

Gilles Caulier

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--- Comment #6 from Gilles Caulier <caulier gilles gmail com>  2010-10-06 15:46:13 ---
Kostya,

Do you use "Tools/Recompress Images" menu entry from album GUI ?

Gilles Caulier

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--- Comment #7 from Gilles Caulier <caulier gilles gmail com>  2010-11-24 09:09:10 ---
digiKam 1.6.0 is out:

http://www.digikam.org/drupal/node/550

Please update and check if this entry still valid.

Thanks in advance

Gilles Caulier

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             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |WAITINGFORINFO




--- Comment #8 from Gilles Caulier <caulier gilles gmail com>  2011-07-06 11:26:55 ---
We need feedback using a recent version. 2.0.0 RC is out, please test...

Thanks in advance

Gilles Caulier

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--- Comment #9 from Alexander Potashev <aspotashev gmail com>  2011-07-06 12:00:38 ---
Nothing wrong happens when I write text in Russian in the "Caption:" field in
EXIF metadata editor and then use "Tools -> Recompress Images...".

But there is a problem with IPTC: if you type in some text in Russian in the
"Caption:" field and then click "Apply", all Russian letters immediately become
question marks. There is of course a note that non-ascii characters shouldn't
be used in IPTC tags, but I think that non-ascii characters should be blocked
from entering (like in EXIF fields marked with an asterisk).

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--- Comment #10 from Alexander Potashev <aspotashev gmail com>  2011-07-06 12:01:06 ---
I have digiKam 1.9.0.

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--- Comment #11 from Alexander Potashev <aspotashev gmail com>  2011-07-06 12:20:29 ---
There is a bigger problem: if you write Russian text into "Caption" in EXIF and
then restart digiKam, that text appears to be copied into "Caption" in IPTC
tags, and it becomes question marks.

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--- Comment #12 from Gilles Caulier <caulier gilles gmail com>  2011-07-06 12:30:36 ---
yes caption is dispatched into Exif, iptc, and Xmp.

There is an entry in bugzilla to add a new option to drop IPTC management for
writting.

https://bugs.kde.org/show_bug.cgi?id=214708

Gilles Caulier

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--- Comment #13 from Alexander Potashev <aspotashev gmail com>  2011-07-06 12:59:20 ---
That's just a wish for an option. But what I'm talking about (and what was also
described in the 2nd comment in bug#214708) is a _bug_ which leads to corrupt
metadata when the user doesn't expect it.

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--- Comment #14 from Marcel Wiesweg <marcel wiesweg gmx de>  2011-07-16 14:25:44 ---
Alexander: Gilles proposes as a fix that IPTC is ignored and the comment is
only written to Exif and XMP (as an option). What other solution do you think
of, how does this bug differ? IPTC only supports Ascii, so with Russian, either
question marks or nothing.

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--- Comment #15 from Alexander Potashev <aspotashev gmail com>  2011-07-16 14:28:32 ---
What I suggest is to write IPTC caption only if it is ascii-only. If there is
at least one non-ascii character, IPTC should be either cleared or kept
unchanged.

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--- Comment #16 from Gilles Caulier <[hidden email]> ---
Official digiKam 2.6.0 release is out since few days now :

http://www.digikam.org/drupal/node/656

Please, check if this entry still valid, or update report accordingly.

Thanks in advance.

Gilles Caulier

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--- Comment #17 from Marcel Wiesweg <[hidden email]> ---
Code has been added which checks for 7-bit and uses unicode otherwise

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--- Comment #18 from Gilles Caulier <[hidden email]> ---
New digiKam 4.11.0 is available :

https://www.digikam.org/node/740

Can you reproduce the problem with this release ?

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