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

Gilles Caulier caulier.gilles at gmail.com
Wed Mar 21 07:44:05 GMT 2018


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.

Gilles Caulier

2018-03-17 22:48 GMT+01:00 jonjt <jjthompson488 at gmail.com>:

> Hello Everyone,
> Thanks for the replies.
> You will find an example image here:
> https://drive.google.com/open?id=1GaokEvrZ3MEkIco_WmGHUXORZ4p30sQc
> This example is a little complicated so, forgive me if my explanation is a
> bit confusing.
> This tar.gz file has a few files in it.  First, you will find the .cr2
> file.
> Of course, that is the original file I shot with my 7D.  Next, there is
> "IMG_7109-Edit-2.tif".  This file was the file that I performed noise
> reduction on with Topaz Denoise.  It's also one of three total .tiff files
> that I've had in my Lightroom library for some time.  The other two .tif
> files I created for post processing experimentation.  However, I have not
> tried editing those files in some time.  As such, I decided not to upload
> those two files.  However, I thought it prudent to mention these additional
> files, because I do believe the changes made to those additional files are
> tracked in the .xmp file that is shown here.
> Additionally, I've included two other files.  The first file in that last
> is
> "IMG_7109-Edit-2 DNG-TEST3.dng".  That was a .dng that I recently exported,
> to see how previews and edits .dngs.  Previewing this .dng shows the edits,
> even after I've selected the "Preview shows the full image" option in the
> configuration widget.  However, when I open this image in the image editor,
> the changes shown in preview disappear.
> Finally, "IMG_7109-Edit-2 TIFF-Test.tif" is also included.  The previewed
> image and that shown in the image editor are both the same; both images
> show
> the postprocessing changes I've made in Lightroom 4.4.  Of course, this is
> different from the other files located in the linked tar.gz file above.
> I'm guessing that the process for importing changes made in Lightroom 4.4
> would require me to create a second, .tif, copy of all files edited in
> lightroom.  Doing so would allow me to preserve the post processing I've
> done while also saving the .cr2 that has the unmodified raw data.  I wanted
> to run this by you just to see if there is a better way to migrate.  While
> I
> do have enough storage space to keep multiple lossless copies of these
> original images, I'd prefer to be a bit more efficient with the space that
> I
> use.
> Thanks for the help and please let me know if I should provide anything
> else
> (including another example).
> --
> Sent from: http://digikam.1695700.n4.nabble.com/digikam-users-
> f1735189.html
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