[Digikam-users] Tags and everything related to them

[Veaceslav Munteanu]

Everybody who have tagging problems, please send me some images(3-4)
with tags which you believe that digikam can't fully set, for testing
purpose.

On Thu, Jul 24, 2014 at 12:01 AM, Wolfgang Mader
<Wolfgang_Mader at brain-frog.de> wrote:
> On Wednesday 23 July 2014 22:33:10 Veaceslav Munteanu wrote:
>> On Wed, Jul 23, 2014 at 10:12 PM, Gilles Caulier
>>
>> <caulier.gilles at gmail.com> wrote:
>> > digiKam always write tags in XMP, into dedicated "digiKam" namespace.
>> >
>> > After to write and read, as this XMP namespace is the first checked to
>> > sync database, other and old place in exif, iptc or xmp where tags are
>> > recorded must be ignored.
>>
>> If you delete tags then sync, new read will look into the own
>> namespace then if nothing found(all tags were deleted) it will go to
>> next namespace(from the code there are 5 places which are checked).
>>
>> What I tried to test is the ability of Tags Manager to delete all from
>> database and then sync database to images, but after re-read, all tags
>> are back.
>>
>> Sometimes users request to read for new namespaces and support is
>> added, but only for read and when it comes to writing, digiKam is no
>> longer consistent and it result in a big mess of old, new and tags
>> impossible to delete.
>
> This is exactly my experience. It is impossible to add a tag and to get rid of
> it again using Digikam. I raised this problem a couple of times on the list,
> but somehow I was not able to make myself clear.
>
> Right now I use exiv2 on the command line to clear tags from images. It would
> be _great_, however, to have a consistent handling of tags withing Digikam.
>
>>
>> > 2014-07-23 20:13 GMT+02:00 Gian Paolo Sanino Vattier <gpsanino at vtr.net>:
>> >> Hello Veaceslav,
>> >> I may be wrong here, but my understanding is that Digikam does not
>> >> "always" modify IPTC and XMP. It only syncs with IPTC if there is no XMP
>> >> data available. So the situation is even worst than presented. My old
>> >> IPTC data keep reappearing and is not even near to be in sync with XMP
>> >> and the database.
>>
>> I'm working on it, and it will update every field it can read. I'm
>> reworking tags read/write subsystem a little, to improve overall tag
>> consistency.
>>
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>