[Digikam-users] IPTC handling and limits

Gilles Caulier caulier.gilles at gmail.com
Wed Sep 12 17:43:12 BST 2007

2007/9/12, Thomas Hummel <hummel at pasteur.fr>:
> Hello and thanks for your work.
> I'm new to digikam and IPTC.
> My understanding is that
>   . "tags" in digikam may be stored as IPTC keywords (i.e. in the IPTC
> "Keyword"
>      field).


  . this field is 64 byte wide and can only store full ASCII characters


  . IPTC has many other fieds (such as location, ...) which can be
> hand-edited
>     by a kipi plugin (through the Image menu).


Note : XMP support is under developpement and will be available for next
release 0.10.0 (KDE4). XMP remplace IPTC-IIM.

All these limits will disapears : UTF-8, no size restriction, etc.
kipi-plugin to edit metadata will be updated of course.

My questions are :
>   . when I save my digikam tags as IPTC metadata : how can I be sure I
> don't
>     overflow the header size ? What happens if I do (does the flag name
> gets
>     truncated ?)

yes, it's truncated automaticly by Exiv2 library.

  . does it make sense to have a digikam tag representing the picture
> location
>     since it will be saved in the keyword header, instead of in the maybe
> more
>     appropriate location IPTC header ?

What do you mean by picture _location_ ?


Gilles Caulier
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