[digiKam-users] Importing xmp data from Lightroom 4.4 to Digikam 5.5.0

[Remco Viëtor]

On mercredi 21 mars 2018 09:57:43 CET Gilles Caulier wrote:
> 2018-03-21 9:44 GMT+01:00 Remco Viëtor <remco.vietor at wanadoo.fr>:
> > On mercredi 21 mars 2018 08:44:05 CET Gilles Caulier wrote:
> > > Hi,
> > > 
> > > I just tested your test photos, and i think i found the reason why the
> > > LR
> > > metadata are not backported to DK :
> > > 
> > > digikam.metaengine: Exiv2 ( 3 ) :  XMP Toolkit error 101: Schema
> > 
> > namespace
> > 
> > > URI and prefix mismatch
> > > digikam.metaengine: Exiv2 ( 2 ) :  Failed to decode XMP metadata.
> > > 
> > > These lines are written on the console by Exiv2 library when files are
> > > parsed to be registered in database.
> > > 
> > > An XMP namespace is badly defined in Exiv2 (the URI use to identify the
> > > namespace). Probably Adobe change the URI as well (which can be a mess).
> > > I'm not yet sure. I continue to search.
> > 
> > Are those namespaces defined within Exiv2, or within the XMP files?
> 
> Both. Exiv2 know the namespaces :
> 
> https://github.com/Exiv2/exiv2/blob/master/src/properties.cpp#L106
> 
> And a XMP sidecar data header indicate which namespace will be used. Both
> must be identical :
> 
> [gilles at localhost Example 1]$ cat IMG_7109.xmp |more
> <x:xmpmeta xmlns:x="adobe:ns:meta/" x:xmptk="Adobe XMP Core 5.5-c002
> 1.148022, 2012/07/15-18:06:45        ">
> <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
>  <rdf:Description rdf:about=""
>    xmlns:xmp="http://ns.adobe.com/xap/1.0/"
> <<<< !!!!!!
>    xmlns:tiff="http://ns.adobe.com/tiff/1.0/"
>  <<<< !!!!!!
>    xmlns:exif="http://ns.adobe.com/exif/1.0/"
>  <<<< !!!!!!
>    xmlns:dc="http://purl.org/dc/elements/1.1/"
> <<<< !!!!!!
>    xmlns:aux="http://ns.adobe.com/exif/1.0/aux/"
> <<<< !!!!!!
>    xmlns:photoshop="http://ns.adobe.com/photoshop/1.0/"
>  <<<< !!!!!!
>    xmlns:xmpMM="http://ns.adobe.com/xap/1.0/mm/"
> <<<< !!!!!!
>    xmlns:stEvt="http://ns.adobe.com/xap/1.0/sType/ResourceEvent#"
>  <<<< !!!!!!
>    xmlns:crs="http://ns.adobe.com/camera-raw-settings/1.0/"
>  <<<< !!!!!!
>    xmlns:lr="http://ns.adobe.com/lightroom/1.0/"
> <<<< !!!!!!
>   xmp:ModifyDate="2015-02-21T19:34:28.00"
>   xmp:CreateDate="2015-02-21T19:34:28.00"
>   xmp:MetadataDate="2016-11-28T10:15:25-05:00"
>   tiff:Make="Canon"
>   tiff:Model="Canon EOS 7D"
> ...
> 
> Gilles
Thank you for the clarification.

Funny detail: there's no more server on "ns.adobe.com" (no idea if that's 
important in practice)

Remco