Re: Extract thumbnails from thumbnails-digikam.db
Posted by
Gilles Caulier-4 on
Jun 09, 2021; 8:43am
URL: http://digikam.185.s1.nabble.com/digiKam-users-Extract-thumbnails-from-thumbnails-digikam-db-tp4717132p4717138.html
Hi Dmitri,
If you have a script to extract thumbnails as PGF blobs from digiKam database, we can share files in my github project.
Best
Gilles
Thank you very much for your prompt reply, Gilles!
Best,
Dmitri
June 8, 2021 6:36 PM, "Gilles Caulier" <[hidden email]> wrote:
> hi Dmitri,
>
> Hey no, it's not a JPEG image, it's PGF image image (using wavelets compression). It's better than
> JPEG in speed, quality, and size.
>
> To convert this PGF t PNG for ex, use my CLI tool from my github account :
>
> https://github.com/cgilles/digikam-pgf-database
>
> Best regards
>
> Gilles Caulier
> Le mar. 8 juin 2021 à 18:20, Dmitri Popov <[hidden email]> a écrit :
>
>> Hello,
>>
>> A technical question from someone who has no idea what he's doing. :-) I'm trying to exact a
>> thumbnail directly from the thumbnails-digikam.db database, but this command gives me a file that
>> is not recognized as JPEG:
>>
>> sqlite thumbnails-digikam.db "SELECT writefile('thumbnail.jpg', data) FROM Thumbnails WHERE id=1;"
>>
>> What am I doing wrong?
>>
>> Thank you!
>>
>> Kind regards,
>> Dmitri
>> ---
>> Tōkyō Made - https://tokyoma.de/