About IPTC and XMP

Build 1501 on 14/Nov/2017  This topic last edited on: 28/Oct/2016, at 11:46

XMP is the XML syntax Adobe uses to save metadata within image files.

GN4 uses the same syntax to read all such data.

In other words, that means that ParseImg reads from an image:

•File metadata (dimensions, resolution, etc...)

•IPTC headers (see also Wire images caption)

•EXIF variables

•Other XMP packets in the file

and then returns all data in an XML that uses the XMP syntax.

To review the returned data by ParseImg, execute

parser.exe –in c:\temp\Ansa06618348.jpg –out c:\temp\metadata.xml

If an image contains both IPTC and XMP caption, in versions prior to 1.6, the XMP caption only is returned - the same behavior as in Photoshop. In version 1.6 and newer, both IPTC set and XMP set are returned separately.

Click to toggle expandChanges in the version 1.6

Version 1.6. introduces new metadata attributes for IPTC values only. These attributes (for read-only use) are used for read IPTC information, and contain only the native IPTC values, ignoring any XMP information.

Note: The existing IPTC/XMP values are not changed, so if the parsed image has only IPTC information, the IPTC/XMP and the new IPTC attributes will have the same values.

Elements definition:

Namespace: xmlns:teraXmp="http://www.teradp.com/schemas/xmp/"

Name

Type

Category

String

City

String

Country

String

DateCreated

DateTime

Credit

String

Instructions

String

TransmissionReference

String

Source

String

State

String

Urgency

int

Headline

String

AuthorsPosition

String

CaptionWriter

String

SupplementalCategories

StringBag

Creator

StringSeq

Subject

StringBag

Description

LangAlt

Title

LangAlt

ContactInfoDetails

String

Copyright

LangAlt

Fixture

String

OriginatingProgram

String

VersionProgram

String

Priority

int

output sample

<source lang="xml"> <rdf:Description rdf:about="D:\salz.jpg" 

xmlns:teraXmp="http://www.teradp.com/schemas/xmp/" 

teraXmp:City="Salzburg" 

teraXmp:Country="Österreich?" 

teraXmp:DateCreated="2007-11-05T14:09:44Z" 

teraXmp:Source="071105_1509.002_mo_her_27kb_1.250_6.7nm_d_200i_2968x_k100.jpg" 

teraXmp:State="Land Salzburg" 

teraXmp:Urgency="0" 

teraXmp:Headline="HERBST AM KAPUZINERBERG" 

teraXmp:CaptionWriter="Albert Bogner, Salzburg" 

teraXmp:ContactInfoDetails="gpg-keyserver.de/pks/lookup?search=0xFA6E86F6" 

teraXmp:OriginatingProgram="ImageMagick" 

teraXmp:VersionProgram="6.3.5 Q16" 

teraXmp:Priority="0">

<teraXmp:Subject>

<rdf:Bag>

<rdf:li>herbst am kapuzinerberg</rdf:li>

<rdf:li>2007</rdf:li>

<rdf:li>2007-11</rdf:li>

<rdf:li>november</rdf:li>

<rdf:li>österreich</rdf:li>

<rdf:li>land salzburg</rdf:li>

<rdf:li>salzburg</rdf:li>

<rdf:li>kapuzinerberg</rdf:li>

<rdf:li>basteiweg</rdf:li>

<rdf:li>baum</rdf:li>

</rdf:Bag>

</teraXmp:Subject>

<teraXmp:Description>

<rdf:ALT>

<rdf:li xml:lang="x-default">Spaziergang am südlichen Kapuzinerberg in der Stadt Salzburg. 

© 2007 by &lt;a href="http://www.bognernet.eu"&gt;Albert Bogner&lt;/a&gt;, Salzburg.</rdf:li>

</rdf:ALT>

</teraXmp:Description>

<teraXmp:Copyright>

<rdf:ALT>

<rdf:li xml:lang="x-default">Copyr. 2007 by Albert Bogner, Salzburg</rdf:li>

</rdf:ALT>

</teraXmp:Copyright>

</rdf:Description>
Click to toggle expandUsing 3rd party tool to duplicate IPTC in XMP

Should you need to duplicate IPTC in XMP in batch processing, take a look to this tool:

http://www.sno.phy.queensu.ca/~phil/exiftool/