[Digikam-devel] Storage of digiKam Tags path (again)...

[Andreas Huggel]

On Monday 12 March 2007 00:29, Gilles Caulier wrote:
> Andreas,
>
> if you talking about Interroperability directory, witch tag number
> you recommend to use ?
>
> In Exiftool database, i can see 5 tags :
>
> 0x0001, 0x0002, 0x1000, 0x1001, and 0x1002.
>

The Exiv2 taglist has the same 5 IOP tags. The Exif standard actually 
only has tag 0x0001. Thus, the good thing about this directory is that 
it's not widely used, so there is less potential for a conflict; choose 
a random number and chances are good that nobody else will use the same 
tag. On the other hand, maybe because the IOP directory is not widely 
used, there is a possibility that it is not well supported by other 
software. So you may want to test if applications that attempt to write 
Exif tags manage to write the IOP directory as well.

-ahu.