[Digikam-users] Reading tags from XMP sidecar files

Anders Stedtlund falolaf at gmail.com
Sat Aug 27 06:52:24 BST 2011


Hi,

Also be aware of if you geo locate images then the xmp sidecar will be
overwritten with only geo location metadata:
https://bugs.kde.org/show_bug.cgi?id=279710

/Anders

2011/8/26 Martin (KDE) <kde at fahrendorf.de>:
> Am Freitag, 26. August 2011 schrieb sleepless:
>> Op 26-08-11 19:09, Gys van Zyl schreef:
>> > I don't like that option. I principle I try not to touch my
>> > original files in any way.
>>
>> I agree completely. That is why I think the best way to go is
>> completely rely on the db (and the copy┬┤s you store) no writing to
>> pictures nor to xmp as the latter does not function on dk.
>
> Partially. I use a similar procedure as with my analogue photos. I
> only use raw from my camera (so no jpeg which are often useless). I
> don't want any program to alter my raw files. So not being able to
> write to raw files is not a bad thing (imho).
>
> For raw files a working sidecar file would be great. DK currently is
> not able to handle this reliable so I use the DB only.
>
> It is different to jpeg files, there I want all relevant data in my
> jpeg files I generate from the raw one. As I use darktable for raw
> processing this is a two step thing:
>
> - generate jpeg (or png) from raw (if there was already a jpeg file
> the new on is generated with a postfix.
> - if there is a jpeg with postfix, extract the exif data from the old
> one, add it to the new one and replace the old with the new one.
>
> This works great with DK. So for jpeg files I don't need sidecar
> files. In the contrary: what will happen, if the jpeg file is newer
> than the sidecar one (altered by an other program)? should the
> internal or external exif data be used? As no program alters my raw
> files, there is no such problem.
>
> Regards
>
> Martin
>
>>
>> > That's why I like the sidecar file - metadata can be added
>> > without modification to the original file.
>> >
>> > In any event, I don't think its possible yet to write metadata to
>> > Canon raw files.
>>
>> no, I was not aware that it was raw.
>>
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