Behavior of "Delegate to ExifTool backend all operations"

[Gmail - nonolemono]

Hello,

thanks for your reply.

I did read the docs before questioning but I was still not sure.
Actually my question came from the fact that Digikam is warning about 
using Exiftool might corrupt your files, so I was thinking that enabling 
it just for RAW & read-only files would make sense, keeping exiv2 used 
for all others.

 From you answer I understand that internally Digikam always use Exiv2 
object/structure, but when you enable Exiftool then all data is 
read/written through Exiftool.

I do have backup anyway so if Exiftool corrupts files I can rollback.

Thanks for this great tool, and by the way the new Face 
detection/recognition in 8.6.0 is impressive compared to old versions.

Thanks
-- 
Bruno Léon


On 25/03/2025 16:39, Gilles Caulier wrote:
> Hi,
>
> See the online doc :
>
> https://docs.digikam.org/en/setup_application/metadata_settings.html#behavior-settings
>
> Exiftool is only used to write/read metadata from/to files. Internally 
> the data is still hosted in the Exiv2 containers. Exiftool is able to 
> handle these containers as well.
>
> As ExifTool are Perl scripts, it's slower than Exiv2 which is C++ 
> compiled, but the abstract layer to deal with file format is so far 
> more advanced than Exiv2.
>
> Playing with RAW and Video files for example with Exiv2 is poor 
> quality, where ExifTool rocks. This is why this kind of option exists 
> in digiKam...
>
> Best
>
> Gilles Caulier
> Gilles
>
> Le mar. 25 mars 2025 à 08:42, Gmail - nonolemono 
> <nonolemono at gmail.com> a écrit :
>
>     Hello,
>
>     using Digikam 8.6.0 I would like to write metadata to raw files
>     (CR2 in my case), but keep using exiv2 for others as it is faster
>     an works well.
>     I'm not sure about the behavior of the settings: "Delegate to
>     ExifTool backend all operations"
>     This make me think than exiv2 will not be used at all in that
>     case, but then if you click "If possible write metadata to RAW
>     files" the popup indicates that Exiftool will *only *be used for
>     RAW files.
>
>     Could you clarify the behavior ?
>
>     Thanks
>     -- 
>     Bruno Léon
>
>
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