[digikam] [Bug 446183] Star Rating for Picture is not read from File's metadata or read incorrectly

[Tom]

https://bugs.kde.org/show_bug.cgi?id=446183

--- Comment #11 from Tom <tom33st at arcor.de> ---
(In reply to Maik Qualmann from comment #10)
> Exiftool can validate the metadata for correctness, here is the output for
> your images:
> 
> exiftool -error -warning -validate -a D81_9520.jpg 
> Warning                         : [minor] Bad NikonScanIFD directory
> Warning                         : [minor] Fixed incorrect URI for
> xmlns:MicrosoftPhoto
> Warning                         : [minor] Ignored empty rdf:Bag list for
> dc:subject
> Warning                         : [minor] IPTC By-line too long (36 bytes;
> should be 32 max)
> Warning                         : [minor] IPTC TimeCreated too short (6
> bytes; should be 11)
> Warning                         : [minor] IPTC DigitalCreationTime too short
> (6 bytes; should be 11)
> Validate                        : 6 Warnings (all minor)
> 
> exiftool -error -warning -validate -a D82_1044.jpg 
> Warning                         : [minor] Non-standard IFD0 tag 0x4746 Rating
> Warning                         : [minor] Bad NikonScanIFD directory
> Warning                         : [minor] Fixed incorrect URI for
> xmlns:MicrosoftPhoto
> Warning                         : [minor] Ignored empty rdf:Bag list for
> dc:subject
> Warning                         : [minor] IPTC By-line too long (36 bytes;
> should be 32 max)
> Warning                         : [minor] IPTC TimeCreated too short (6
> bytes; should be 11)
> Warning                         : [minor] IPTC DigitalCreationTime too short
> (6 bytes; should be 11)
> Validate                        : 7 Warnings (all minor)
> 
> Maik

Tanks a lot Maik. I did some further investigations:
After repairing the metadata with exiftools as you proposed and re-reading the
metadata from the image it is shown correctly in digikam. 
Then I updated the star rating in Apple Aperture and wrote the change from the
DB to the jpg. Again, after re-reading the metadata information, digikam is not
updating the star informtion according to the changes done in aperture, whereas
all other image software packages I could test on show the changed star
information. I assume this might be a challenge for other people with large
repositories which are currently swithching to digikam (which is an AMAZING
tool!) as well. I will try to open a request with Exiv2.

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