[Digikam-devel] [Bug 257904] Digikam not reading metadata from foreign images

Gilles Caulier caulier.gilles at gmail.com
Mon Dec 6 19:32:22 CET 2010


https://bugs.kde.org/show_bug.cgi?id=257904


Gilles Caulier <caulier.gilles at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID




--- Comment #16 from Gilles Caulier <caulier gilles gmail com>  2010-12-06 19:32:21 ---
Rawstudio developer said that PNG do not support Exif... This is false...

PNG support XMP which can embed Exif metadata. It's a recent specification from
Adobe.

digiKam support this way, but also another one which consist to use a iTxt PNG
chunck as ImageMagick do. Try :

convert foo.jpg foo.png
convert foo.png foo2.jpg.

And look like Exif from foo.jpg and foo2.jpg are the same.

Exiv2 library, which is used by digiKam to manage metadat use this way... I'm
sure i implement this code myself.

Rawstudio, must use a decent library to play with metadata, as digiKam do...

This is not the fault of digiKam if other photo tool software are not able to
manage metadta on the right way. Sorry to make digiKam better...

Gilles Caulier

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