[digiKam-users] xmp sidecar files for tiff files

[Maik Qualmann]

Hi mj,

BigTIFF was developed for gigapixel images and should only be used if the 
image size is required. There is currently no metadata tool that can write 
BigTIFF.

Maik

Am Montag, 5. September 2022, 20:30:04 CEST schrieb Milind Joshi:
> Hi Maik
> 
> Thanks. That worked! BTW, I found the culprit! It's the latest release
> of Gimp. By default it exports the tiff file in the Big TIFF format.
> When I switch off that option while exporting a tif file, the sidecar is
> not created.
> 
> I guess since this is going to be a feature of Gimp 3 also, this should
> be taken care of in the next release of digiKam.
> 
> Till such time, please switch off this option while exporting a tiff
> unless you need Big TIFF for whatever reason.
> 
> mj
> 
> > 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