xmpidq:scheme

[Jom]

Hello.
Why doesn't ExifTool know the xmpidq:scheme tag?

[Phil Harvey]

As far as I can tell, xmpidq:scheme is not a tag.  Correct me if I'm wrong, but I think this is only a qualifier used for xmp:Identifier.

ExifTool doesn't yet support writing XMP qualifiers.

- Phil

[StarGeek]

Also, the only place I can find it mentioned in my searches that isn't a false result is in the source code of the Calibre e-book reader.  That's a bit limited in scope and usefulness.

[Jom]

Yes, I mistakenly called it a tag.
I meant why aren't qualifiers supported yet?
I see old commented-out code:
#my %sIdentifierScheme = (
#    NAMESPACE   => 'xmpidq',
#    Scheme      => { }, # qualifier for xmp:Identifier only
#);

[Phil Harvey]

There is very little demand for XMP qualifiers, and adding support for writing them would be a real pain.

- Phil

[Jom]

ok thanks