Tranquillity Base > Photo Meta Edit > User Guide > XMP Metadata

• About XMP Metadata
• Adding a Schema
• Adding a Property
• Property Types
• Editing Properties
• IPTC Photo Metadata
• List of Properties

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XMP (Extensible Metadata Platform) is a metadata format described using XML (Extensible Markup Language). It consists of sets of properties, known as schemas, and many such schemas have been defined.

Each schema has a namespace URI identifier. While it looks like a URL, it typically does not point to an actual web page. Schemas also have prefixes associated with them.

Properties are identified using a prefix and a name, such as dc:creator.

In Photo Meta Edit, the following schemas can be added or edited:

Schema	Namespace URI	Prefix	Property
Dublin Core	http://purl.org/dc/elements/1.1/	dc	Title, Keywords, Copyright, etc.
Basic	http://ns.adobe.com/xap/1.0/	xmp	Label, Rating, Modify Date, etc.
Right Management	http://ns.adobe.com/xap/1.0/rights/	xmpRights	Owner, Usage Terms, etc.
Photoshop	http://ns.adobe.com/photoshop/1.0/	photoshop	Headline, Category, Credit, etc.
TIFF	http://ns.adobe.com/tiff/1.0/	tiff	TIFF metadata properties
Exif	http://ns.adobe.com/exif/1.0/	exif	Exif, GPS metadata properties
Exif EX	http://cipa.jp/exif/1.0/	exifEx	Body Serial Number, Lens Model, etc.
IPTC Core	http://iptc.org/std/Iptc4xmpCore/1.0/xmlns/	iptc4xmpCore	Scene, Intellectual Genre, Creator's Contact Info, etc.
Photo Sphere	http://ns.google.com/photos/1.0/panorama/	GPano

Since schemas are defined by various companies and industry groups, there are properties that describe similar types of metadata.
Go to the List of Properties

When selecting XMP from the Metadata Type list, you can see how many schemas and properties are included in the XMP.

Select the file(s) to which you want to add a schema, then choose Metadata > Add > XMP > "schema".

Select the desired schema from the Metadata Type List, then click the “+” popup button below the metadata view and choose the property you want to add from the list that appears.

There are several structural types of properties:

• Single-value Type
  A property that holds a single value.
  Example: Creator Tool in the Basic schema
• Simple Array Type
  A property that hold one or more values.
  Example: Keywords in the Dublin Core schema
• Structured type
  A property composed of multiple related values.
  Example: Creator's Contact Info in the IPTC Core schema
• Language Alternative Array Type
  A property that holds one or more values, each associated with a language.
  Example: Title in the Dublin Core schema
• Controlled Vocabulary Single Value Type
  A property that allows selection of a single value from a predefined set.
  Example: Exposure Program in the Exif schema
• Controlled Vocabulary Array Type
  A property that allows selection of one or more values from a predefined set.
  Example: IPTC Subject Code in the IPTC Core schema

Click the button to edit the metadata.

Click the button to edit the metadata entry.
Click the button to add a new entry.

Click the flag button to change the language of the metadata entry. The language of the first entry should be set to Default.
Click the button to add a new entry.

You can customize the list of languages in the Settings or Preferences.

Choose a value from the predefined set of options.

Choose a value from the predefined set of options.
Click the button to add a new entry.

The IPTC (International Press Telecommunications Council), an international organization of news agencies and publishers, defines this metadata standard for images, known as IPTC Photo Metadata.

The IPTC Photo Metadata standard is available in two formats: IIM (Information Interchange Model) and XMP.
Photo Meta Edit supports viewing and editing only the XMP format.

The XMP-based IPTC Photo Metadata is composed of properties from multiple schemas.
(For example, Headline comes from the Photoshop schema, Title from the Dublin Core schema, and Creator Contact Info from the IPTC Core schema.)

When you select “IPTC Photo Metadata” from the Metadata Type List, related properties will be displayed in a list.
Click “Show Item” at the top right to show a list of available fields. You can toggle the visibility of each field and rearrange their order by dragging and dropping. The Creator's Contact Infomation section is fixed at the bottom.

Click the “Edit” button to open the editing sheet. If “IPTC Photo Metadata” does not appear in the Metadata Type List, choose Metadata > Edit IPTC Photo Metadata... to open the editing sheet.

In the editing sheet, you can add or edit metadata across multiple schemas at once, without switching between them.

Over 1300 Subject Codes are defined. IPTC Subject Code Definition

IPTC Scene Definition