[Digikam-users] Photographs with metadata...

[Gilles Caulier]

Le Jeudi 23 Février 2006 15:28, Thorsten Schnebeck a écrit :
> Am Donnerstag 23 Februar 2006 13:57 schrieb Gilles Caulier:
> > I think that it's not need to recreate a new project based on
> > ExifTool. Contribute to Exiv2 is certainly the better choose...
>
> Yes, I have pointed Phil to exiv2 as it has already the same
> reading logic and has the same object orientated structure like
> ExifTool. There are also some other very good C/C++ metatag
> decoder out there.
> But generic writing support for so many image formats it that what
> makes ExifTool up to now unique - and it could be that exiv2
> needs a deeper restructuring when it wants to have 1st class
> writing support. When Phil starts implementing writing support
> with Version 5.00 this was nearly a rewrite of 4.xx and that old
> version had also very good decoding quality.
> When implementing writing you have all the problems with different
> TAGs meaning the same thing and so on.
> I think exiv2 will have excellent support of decoding metatags for
> all current raw formats in a shorter time. But I also think, that
> writing metatag will be limited by the possibilities of libjpeg,
> libpng, libtiff and copying  binary objects etc. But stuff like
> integrating IPTC into mrw - I think - this needs a longer time.

About Reading RAW metadata, i full agree with you... but writting metadata in 
RAW file is a non sence for me because all RAW files are propietary... 

The only file format to backup RAW file data/metadata must be one : DNG (:=)))

Sure DNG isn't a standard actually, but it's the most serious way for the 
future about writting...

Gilles