sidecar file names

[Henrik Hemrin]

Mmm first of all, I would take a fresh backup of everything.
I'm thinking load, because I do not know below for sure.

I think a possible method is to first make sure data is in digiKam 
dataBase, then delete the xmp's, change setting to off and then write 
new fresh xmp side car files.

However, your current side side cars P1234.xmp can, depending on your 
use case, have a lot of other meta data created by other sw than 
digiKam, which you want to preserve, which I assume will be lost if you 
create fresh ones. For example, I started with Photoshop Elements, over 
Lightroom, to digiKam. I may also have data from AfterShot and possibly 
some other sw as well. I believe those xmp data sources will be lost.

The "commercial" P1234.xmp is in my understanding according to 
standard/industry standard, while digiKam and some more sw use 
P1234.DNG.xmp. The digiKam way indeed has its advantages to distinguish 
sidecars on file types. Exactly if there is any other advantage with 
P1234.DNG.xmp, I do not know. I'm still on the commercial method, kept 
it from my pre-digiKam days and continued that way, but your question is 
of interest to me.

The developer of the Rapid Photo Downloader for Linux, writes and argue 
about the topic on his faq, incl links to Adobe (broken link) and 
pixl.us discussion. https://damonlynch.net/rapid/faq.html I am not 
compentent to debate for either procedure, only can note that commercial 
is not the preferred method for digiKam.

I suppose you could rename "manually" your existing P1234.xmp to 
P1234.DNG.xmp, but no idea what consequencies that can have.

Regards
Henrik

Den 2024-07-27 kl. 16:09, skrev frederic chaume:
> 
> you can delete until you are sure the database has been synchronized 
> from the metadata from the files (currently on-going, but taking hours )
> 
> in the maintenace tool , there is a synchronization from database to 
> metadata files but I don't know what is the behavior with the "sidecar 
> file names are compatible with commercial products" set to OFF regarding 
> the existing sidecar files
> is there someone who already used it ?
> 
> frederic
> 
> 
> Le 27/07/2024 à 15:26, digikam at boeziek.nl a écrit :
>> I can be mistaken, but I thought you could always delete the XMP files 
>> and then force Digikam to create them from its own database (just make 
>> sure you have backup always!).
>>
>> Else you could probably do a rename with a tool or shell command (I am 
>> no Windows user).
>>
>> XMP files are a struggle for me too (set with or without 
>> compatibility), still have not settled on one or the other.
>>
>> Best,
>> Etienne
>>
>> On 27 Jul 2024, at 15:08, frederic chaume <frederic.chaume at gmail.com> 
>> wrote:
>>
>> Hi all
>>
>> If I can ask it differently to make it more clear:
>>
>> how to move from "sidecar file names are compatible with commercial 
>> products" ON to OFF
>> that means how to replace basename.xmp (example P1234.xmp as a sidecar 
>> for P1234.DNG  ) to basename.ext.xmp (example P1234.DNG.xmp as a 
>> sidecar for P1234.DNG  )
>>
>> I have hundred of thousands of files and I don't expect renaming all 
>> my xmp files
>>
>> thanks for your help
>>
>> frederic
>>
>>
>>
>> Le 26/07/2024 à 10:01, frederic chaume a écrit :
>> Hi all
>>
>>
>> currently the parameter "sidecar file names are compatible with 
>> commercial products" is set. That means the name I can see is 
>> basename.xmp and these are the files I can see in the folders where I 
>> have RAW files
>>
>> Now seems there are some compatibility issue with another progam (DXO) 
>> which is exepecting unique xmp names (conflict may occur between RAW 
>> files and DNG files)
>>
>> So I started to unset this parameters, the problem is when I start DK 
>> , it started a long process of "finding new items" and seems some 
>> files are missing tags and rating in the album view, while the correct 
>> information is still present in the associated basename.xmp
>> then I have aborted the process of finding new items, set back the 
>> parameter "sidecar file names are compatible with commercial products"
>> and I run a "read metadata from file to database" to recover the 
>> information in the album view
>>
>> So question is what is the process to reset this parameter without 
>> loosing information?
>> I'm using DK 8.4 on windows
>>
>> thanks in advance
>>
>> frederic
>>
>>
>