[Digikam-devel] [digikam] [Bug 336328] Tags Manager's Sync Export DB to metadata, mirrors XMP but it only appends IPTC keywords data

[GPSanino]

https://bugs.kde.org/show_bug.cgi?id=336328

--- Comment #4 from GPSanino <orcatech at vtr.net> ---
Gilles, if I understand properly, this means that IPTC is _*ignored*_ if
there is something XMP on the file's metadata.
So, I should be ok after cleaning the IPTC metadata with DK 3.5.0;...  
because I have no clue about how to synchronize XMP with IPTC.

My surprise here is because I do not recall have used XMP before. I have
not enabled to write on XMP side cars neither on my DK settings. Then, I
do not know how metadata showed up in XMP on my files.
I guess that happened during the sync export with Tag Manager with DK4.0.0.
I am glad that DK 3.5.0 still reads the IPTC section so I can try delete
its obsolete content. However, this fix seems only temporary since I may
have again the same problem (not mirrored IPTC/XMP content) next time I
re-arrange the tags tree and save to metadata.

I wonder how in DK4.0.0 we will be able to clean IPTC data as we used to
do in DK3.5.0. From your explanation I am not sure to understand if this
will be treated as a bug or this is just the new way things are. Maybe I
should see this inconsistency as fine since now I have XMP on my files.
This is important for me because I have connected Digikam4.db file with
LibreOffice.base for further queries, data analysis, etc. Now I know I
have to change the used fields to retrieve data to only XMP fields and
not IPTC. You saved me a lot of problems by telling me this.

Thanks a lot Gilles
gps

On 06/16/2014 04:27 PM, Gilles Caulier wrote:
> https://bugs.kde.org/show_bug.cgi?id=336328
>
> Gilles Caulier <caulier.gilles at gmail.com> changed:
>
>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                  CC|                            |caulier.gilles at gmail.com
>
> --- Comment #3 from Gilles Caulier <caulier.gilles at gmail.com> ---
> yes, by preference order, metadat in DB are filed by XMP and after IPTC if XMP
> is not available.
>
> Why? Because IPTC has serious limitation that XMP don't have. Typically
> Metadata Working Groug recommend to synchronize XMP with IPTC for the best
> compatibility.
>
> I recommend to revise your workflow if your initial metadata DAM do not respect
> this rules.
>
> Gilles Caulier
>

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