XMP namespaces and properties. Where to find a list of these therms?

[warm_reality157F]

Hi

I´m trying to create a script that stores some xmp informations of photos (like EXIF Data Created...IPTC Core Creator and so on) to variables.

var selected = app.document.selections

var xmp = selected[0].metadata

var creationData = xmp.read (namespace, property)

var author = xmp.read (namespace, property)

In order to do it I need to know the right namespace and property. The Bridge JavaScript reference does not show me a list of what I can use. Do you have any reference to follow?

I´m having no sucess looking over internet. Thank you a lot (again) for the help

Best Regards

Gustavo.

[Muppet Mark · Accepted solution]

IMO the easiest way is to just select a file in bridge and get info… comm+i and look at the raw data…

[warm_reality157F]

Hi Muppet

Yes...its the easy way...but I need to store these names in variables as strings in my scripts because I intent to use these datas to rename files and also folders automatically.

How could I find a list of namespaces and properties to use along the method metadata.read()??

Thank you a lot

Best Regards

Gustavo

[warm_reality157F]

Hum...interesting Muppet

Now I understand your answer!! haha

I´ll try this and tell you if sucess

Thank you a lot

Best Regards

[warm_reality157F]

Perfect, Muppet

That´s perfect for raw data (capturing exif)..

How about fields in the IPTC section? How could I reach it??? (like Creator, Keywords, Instructions)....these fields can be edited so I assume I can even write in add to only read.

I´m trying such:

var author = xmp.read("http://www.iptc.org/photometadata/", "Creator")

but it´s not accepting.

Thank you a lot

Gustavo.

[warm_reality157F]

Oops...found also in Raw data too

var author = xmp.read("http://purl.org/dc/elements/1.1/", "dc:creator")

No questions any longer!

Thank you

Gustavo.

[Michael_L_Hale]

You can find the formal spec here http://partners.adobe.com/public/developer/en/xmp/sdk/XMPspecification.pdf

[warm_reality157F]

Thank you a lot Michael. This document is also very useful. Thank you for sharing.

just one more question. In Bridge JavaScript reference I'm not finding a method for writting values to a specific metadata field. For example I have a name stored to a variable and would like to set it as Creator (IPTC) for the selected image.

The metadata.read allow me to see the values. But how to write in the fields? Like a Document.info property in Photoshop?

Thank you very much

Best regards

Gustavo

[Muppet Mark]

To do this requires you loading the external XMP library object… You will find this covered in section 10 of the JavaScript Tools Guide ( this is the guide for the non-app specific stuff ). There are also lots of Paul's examples here too…

[warm_reality157F]

Thank you Muppet

I´m reading that JavaScript reference (at true I´m reading a lot of references..my head is spinning hahaha)...and also saw some Paul´s examples here in the forum

Look at my code (I´m trying to insert my name in the IPTC Core Ceator field). But it does not work. What Am I missing?

var selections = app.document.selections

if (ExternalObject.AdobeXMPScript==undefined){

    ExternalObject.AdobeXMPScript = new ExternalObject("lib:AdobeXMPScript")

}

var xFile = new XMPFile (selections[0].spec.fsName, XMPConst.UNKNOWN, XMPConst.OPEN_FOR_UPDATE)

var xmp = xFile.getXMP()

xmp.deleteProperty (XMPConst.NS_IPTC_CORE, "Creator")

xmp.setProperty (XMPConst.NS_IPTC_CORE, "Creator", "Gustavo")

if (xFile.canPutXMP(xmp)){

    xFile.putXMP(xmp)

    xFile.closeFile(XMPConst.CLOSE_UPDATE_SAFETY)

}

Thank you a lot for the help

Best Regards

Gustavo.

[Paul Riggott]

That field is an Array  also Creator should be creator, so it would be ...

var selections = app.document.selections; 
if (ExternalObject.AdobeXMPScript==undefined) ExternalObject.AdobeXMPScript = new ExternalObject("lib:AdobeXMPScript");
var xFile = new XMPFile (selections[0].spec.fsName, XMPConst.UNKNOWN, XMPConst.OPEN_FOR_UPDATE);
var xmp = xFile.getXMP();
xmp.deleteProperty (XMPConst.NS_IPTC_CORE, "creator");
xmp.appendArrayItem(XMPConst.NS_DC, "creator", "Gustavo", 0, XMPConst.ARRAY_IS_ORDERED);
if (xFile.canPutXMP(xmp)){
    xFile.putXMP(xmp);
    xFile.closeFile(XMPConst.CLOSE_UPDATE_SAFETY);
}

[warm_reality157F]

Hi Paul

It´s not working yet. Althought it does not get erros...after running the field creator (IPTC) keeps empty.

I made some changes to accomodate all selected thumbnails..made some alternatives but did not have sucess..

Look:

var selected = app.document.selections

var person = prompt("Tell the name of the person", "")

for (var a in selecionados){

    var xFile = new XMPFile (selected.spec.fsName, XMPConst.FILE_JPEG, XMPConst.OPEN_FOR_UPDATE);

    var xmp = xFile.getXMP();

    xmp.deleteProperty (XMPConst.NS_IPTC_CORE, "creator");

    xmp.appendArrayItem(XMPConst.NS_IPTC_CORE, "creator", person, 0, XMPConst.ARRAY_IS_ORDERED);

    if (xFile.canPutXMP(xmp)){

        xFile.putXMP(xmp);

        xFile.closeFile(XMPConst.CLOSE_UPDATE_SAFETY);

    }

}

[Paul Riggott]

Does this help...

var selected = app.document.selections
var person = prompt("Tell the name of the person", "")
if (ExternalObject.AdobeXMPScript==undefined) ExternalObject.AdobeXMPScript = new ExternalObject("lib:AdobeXMPScript");
for (var a  in selected){
var xFile = new XMPFile (selected.spec.fsName, XMPConst.UNKNOWN, XMPConst.OPEN_FOR_UPDATE);
var xmp = xFile.getXMP();
xmp.deleteProperty (XMPConst.NS_DC, "creator");
xmp.appendArrayItem(XMPConst.NS_DC, "creator", person, 0, XMPConst.ARRAY_IS_ORDERED);
    if (xFile.canPutXMP(xmp)){
        xFile.putXMP(xmp);
        xFile.closeFile(XMPConst.CLOSE_UPDATE_SAFETY);
    }
}

[warm_reality157F]

Hey Paul

Now it worked!! Thank you a lot

Comparing the 2 what I see is just a change from NS_IPTC_CORE to NS_DC when deletting and appending the property??? (of couse, there is also the load of the external XMP Script but it I was doing in my original script).

Why did you made this change? Just to better understand the idea!

Thank you a lot and best regards

Gustavo.

[Paul Riggott]

It was my fault I got it wrong the first time Gustavo

[warm_reality157F]

Haha, no no, Paul

The NS_IPTC_CORE was written by me in my first approach (the one I posted here). And you corrected it using NS_DC. And I do not understand why IPTC_CORE was wrong hahahah. Would like to understand why NS_DC worked and IPTC_CORE did not work since the creator field is part of the core haha

Best Regards

Gustavo.