Hello, I work with digiKam and ShowFoto 5.2.0 on a Win 7 system. In order to come to know ShowFoto I played with it. So I also opened a *.jpg (with Exif metadata) image and stored it as *.jp2. Now Exiftool cannot read the Exif metadata written by ShowFoto. It reports : Unrecognized UUID EXIF box. Also XnViewMP - which uses an Adobe toolkit for metadata - does not read the metadata of *.jp2 file. I asked Phil Harvey, the developer of Exifttol, and he stated: "Digikam has apparently written a JPEG EXIF header in front of the TIFF header (six extra bytes: "Exif\0\0"), so ExifTool gives the warning and can't process the EXIF. From interoperability point of view this is a very bad situation. Because Exiftool and XnViewXP write a "common format" of the uuid tag, I guess the problem could be on digiKam side. Please help to solve the major interoperability problem. Thanks in advance Best regards Herb Reproducible: Always
digiKam do not write metadata directly. All is delegate to Exiv2 shared library. Please report this problem to Exiv2 bugzilla. Gilles Caulier
I just tested to export a JPEG to JP2 including Exif using image editor. File is read properly with Exiftool and Exif are there. Configuration: digiKam 7.3.0 + Exiv2 0.27.3