[digiKam-users] xmp sidecar files for tiff files

[Maik Qualmann]

Thank you for the test image. The TIFF is a BTF image, more precisely a 
BigTIFF. A BigTIFF has a 64-bit image file format. Exiv2 does not currently 
support this.
Also, ExifTool currently only supports reading metadata. This means that even 
with digiKam-8.0.0 and ExifTool support when writing, no metadata can be 
changed in this BTF image.

You can open the image in the digiKam image editor and save it again as a 
TIFF, then everything works, this should also work with the BQM.

Maik

Am Samstag, 3. September 2022, 13:16:45 CEST schrieb Gilles Caulier:
> Hi all,
> 
> What's happening with ExifTool instead of Exiv2. In 8.0.0, a new
> option can switch from Exiv2 to Exiftool as a metadata backend.
> 
> gilles
> 
> Le sam. 3 sept. 2022 à 07:45, Maik Qualmann <metzpinguin at gmail.com> a écrit 
:
> > Yes, Exiv2 cannot write to your TIFF file, neither can it read it. For
> > Exiv2 it is an unknown image type. If you want you can send me the TIFF
> > file to my email for further checking.
> > 
> > > [3580] digikam.metaengine: Will write Metadata to file "G:/Edited
> > > Photographs - tif/K20D - 0,03,538 - B&W.tif"
> > > 
> > > [3580] digikam.metaengine: Cannot save metadata to image
> > > with Exiv2 backend:  (Error # 11 :
> > > "G:/Edited Photographs - tif/K20D - 0,03,538 - B&W.tif: The file
> > > contains
> > > data of an unknown image type"
> > > 
> > > [3580] digikam.metaengine: Will write XMP sidecar for file
> > > "K20D - 0,03,538 - B&W.tif"
> > 
> > Maik