Re: Extract thumbnails from thumbnails-digikam.db
Posted by
Gilles Caulier-4 on
Jun 08, 2021; 4:36pm
URL: http://digikam.185.s1.nabble.com/digiKam-users-Extract-thumbnails-from-thumbnails-digikam-db-tp4717132p4717133.html
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 :
Best regards
Gilles Caulier
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
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