xmp file contents

[Bob M]

One of my xmp files contains the following fragment:

      <rdf:Description rdf:about=""
            xmlns:photomechanic="http://ns.camerabits.com/photomechanic/1.0/">
         <photomechanic:Prefs>1:4:3:000251</photomechanic:Prefs>
      </rdf:Description>


I assume this means

1) the photo is tagged,
2) the colour is 4 (1 being magenta and 9 being no colour),
3) three stars have been assigned, and
4) the frane number is 000251.

Could you please confirm this assumption.  Note that the indicated url - http://ns.camerabits.com/photomechanic/1.0/ - returns a 404 not found.

(I need to generate xmp files and update jpegs using exernal data and a perl scrip based on ExifTool.pm)

Thanks
Bob

[Kirk Baker]

Bob,

One of my xmp files contains the following fragment:

      <rdf:Description rdf:about=""
            xmlns:photomechanic="http://ns.camerabits.com/photomechanic/1.0/">
         <photomechanic:Prefs>1:4:3:000251</photomechanic:Prefs>
      </rdf:Description>


I assume this means

1) the photo is tagged,
2) the colour is 4 (1 being magenta and 9 being no colour),
3) three stars have been assigned, and
4) the frane number is 000251.

Could you please confirm this assumption.  Note that the indicated url - http://ns.camerabits.com/photomechanic/1.0/ - returns a 404 not found.

(I need to generate xmp files and update jpegs using exernal data and a perl scrip based on ExifTool.pm)

You are correct.  As for the 404 error, there is no such server as ns.camerabits.com, that part is just to provide a unique XML name space for our tags.

-Kirk

[Hayo Baan]

As Kirk said, this is indeed correct. In fact if you use exiftool, it will show you the information as a "Prefs" tag with the 4 different fields named (e.g., Tagged:1, ColorClass:4, Rating:3, FrameNum:000251). Using perl you should be able to easily get (and set) the different components.

Cheers,
    Hayo

[Bob M]

Thank you both for your help.