Creative Commons - User contributions [en]

XMP

2007-05-31T17:23:24Z

Hub: /* Other Open Source Implementations */

[[Category:Developer]]
[[Category:Technology]]
[[Category:metadata]]
[[Category:xmp]]
= Creative Commons Metadata and XMP =

<div style="float: right">
[http://www.adobe.com/products/xmp http://creativecommons.org/images/metadata/xmp_tagline.png]
</div>

[[XMP]] (Extensible Metadata Platform) facilitates embedding metadata in files using a subset of RDF. Most notably XMP supports embedding metadata in PDF and many image formats, though it is designed to support nearly any file type.

Creative Commons is considering recommending XMP as the preferred format for embedded metadata, given its [http://labs.adobe.com/technologies/xmptoolkit/#FAQ support for numerous file formats] and the balkanized state of embedded metadata standards. Others are apparently coming to the same conclusion, e.g., Microsoft has announced support for [http://blogs.msdn.com/pix/archive/2006/08/23/715340.aspx XMP in Vista applications] and Jon Udell [http://blog.jonudell.net/2007/02/14/truth-files-microformats-and-xmp/ notes] "There’s also good support in .NET Framework 3.0 for reading and writing XMP metadata."

== Implementations ==

The Creative Commons [http://www.creativecommons.org/license/ licensing process] offers a XMP template which may be used to mark files within XMP-supporting [[XMP Help|Adobe applications (step-by-step how-to document)]].

=== PDF ===

* LaTeX users may use the [http://www.creativecommons.org/weblog/entry/4270 pdflatex macro].
* [http://enrico.masala.googlepages.com/plm_index.html PdfLicenseManager] is a standalone GUI/command line tool for embedding XMP in PDFs.
** PdfLicenseManager uses the [http://www.lowagie.com/iText/ iText] java library, which may be easily incorporated into any Java tool that needs to do XMP embedding.

=== JPEG ===

* We have a PHP tool/library for embedding XMP in JPEGs, useful in, e.g., web gallery programs. See the xmp/php-jpeg module in the [[Source Repository Information|cctools sourceforge subversion repository]].

=== Video (various) ===

* None yet

=== Other Open Source Implementations ===

* [http://grigio.org/xmp_manager XMP Manager] A Ruby action for Nautilus which exposes and allows editing of XMP metadata.
* [http://librdf.org/raptor/ Raptor] - Supposedly this can generate XMP somewhat, and can also parse it, if you grab the rdf/xml out of the <?xmp...> blocks for it. It's GPL / LGPL / Apache2 licensed so compatible with your code.
* [http://www.figuiere.net/hub/blog/?Exempi Exempi] - Hubert Figuiere's BSD-licensy library to handle XMP, based on Adobe's SDK.

== Note on Visible Copyright Notice in PDFs ==

Even when embedded with XMP metadata a licensed PDF document should include a visible copyright notice as described in [[HOWTO Tag HTML pages]].

== Note on embedded metadata ==

This specification conforms with the [[Nonweb Tagging]] recommendation.

== Specification ==

XMP [http://partners.adobe.com/asn/tech/xmp/download.jsp defines] a rights management schema (see section 4.2.5). Creative Commons sets the following properties (example values):

'''xapRights:Copyright''' — ''This work is licensed to the public under the Creative Commons Attribution-ShareAlike license http://creativecommons.org/licenses/by-sa/2.0/ verify at http://example.com/pdf-metadata.html'' (Replace URL following 'verify at' with URL containing metadata about the XMP-embedded file.)

'''xapRights:Marked''' — ''False'' if Public Domain, ''True'' otherwise.

'''xapRights:WebStatement''' — ''http://example.com/pdf-metadata.html'' (Replace with URL containing metadata about the XMP-embedded file.)

We also define a Creative Commons schema ''http://creativecommons.org/ns#'' whose common prefix is cc.

It currently has the following property:

'''license''' — ''http://creativecommons.org/licenses/by-sa/2.0/'' (Replace with relevant license URL.)

Set '''license''' to maintain a direct reference to the license URL.

== Developer Challenges ==

We have setup some [[XMP developer challenges]] to encourage the use of XMP and also to do some research as to what is already supported and what we support.

== XMP Logo ==
<small>The XMP logo is either a registered trademark or tradmark of the Adobe Systems Incorporated in the United States and/or other countries.</small>

XMP

2007-05-31T16:24:11Z

Hub: /* Specification */

[[Category:Developer]]
[[Category:Technology]]
[[Category:metadata]]
[[Category:xmp]]
= Creative Commons Metadata and XMP =

<div style="float: right">
[http://www.adobe.com/products/xmp http://creativecommons.org/images/metadata/xmp_tagline.png]
</div>

[[XMP]] (Extensible Metadata Platform) facilitates embedding metadata in files using a subset of RDF. Most notably XMP supports embedding metadata in PDF and many image formats, though it is designed to support nearly any file type.

Creative Commons is considering recommending XMP as the preferred format for embedded metadata, given its [http://labs.adobe.com/technologies/xmptoolkit/#FAQ support for numerous file formats] and the balkanized state of embedded metadata standards. Others are apparently coming to the same conclusion, e.g., Microsoft has announced support for [http://blogs.msdn.com/pix/archive/2006/08/23/715340.aspx XMP in Vista applications] and Jon Udell [http://blog.jonudell.net/2007/02/14/truth-files-microformats-and-xmp/ notes] "There’s also good support in .NET Framework 3.0 for reading and writing XMP metadata."

== Implementations ==

The Creative Commons [http://www.creativecommons.org/license/ licensing process] offers a XMP template which may be used to mark files within XMP-supporting [[XMP Help|Adobe applications (step-by-step how-to document)]].

=== PDF ===

* LaTeX users may use the [http://www.creativecommons.org/weblog/entry/4270 pdflatex macro].
* [http://enrico.masala.googlepages.com/plm_index.html PdfLicenseManager] is a standalone GUI/command line tool for embedding XMP in PDFs.
** PdfLicenseManager uses the [http://www.lowagie.com/iText/ iText] java library, which may be easily incorporated into any Java tool that needs to do XMP embedding.

=== JPEG ===

* We have a PHP tool/library for embedding XMP in JPEGs, useful in, e.g., web gallery programs. See the xmp/php-jpeg module in the [[Source Repository Information|cctools sourceforge subversion repository]].

=== Video (various) ===

* None yet

=== Other Open Source Implementations ===

* [http://grigio.org/xmp_manager XMP Manager] A Ruby action for Nautilus which exposes and allows editing of XMP metadata.
* [http://librdf.org/raptor/ Raptor] - Supposedly this can generate XMP somewhat, and can also parse it, if you grab the rdf/xml out of the <?xmp...> blocks for it. It's GPL / LGPL / Apache2 licensed so compatible with your code.
* [http://www.figuiere.net/hub/blog/?Exempi Exempi] - Hubert Figuiere's lgpl library to handle XMP, mainly for purposes of photo, but generalized.

== Note on Visible Copyright Notice in PDFs ==

Even when embedded with XMP metadata a licensed PDF document should include a visible copyright notice as described in [[HOWTO Tag HTML pages]].

== Note on embedded metadata ==

This specification conforms with the [[Nonweb Tagging]] recommendation.

== Specification ==

XMP [http://partners.adobe.com/asn/tech/xmp/download.jsp defines] a rights management schema (see section 4.2.5). Creative Commons sets the following properties (example values):

'''xapRights:Copyright''' — ''This work is licensed to the public under the Creative Commons Attribution-ShareAlike license http://creativecommons.org/licenses/by-sa/2.0/ verify at http://example.com/pdf-metadata.html'' (Replace URL following 'verify at' with URL containing metadata about the XMP-embedded file.)

'''xapRights:Marked''' — ''False'' if Public Domain, ''True'' otherwise.

'''xapRights:WebStatement''' — ''http://example.com/pdf-metadata.html'' (Replace with URL containing metadata about the XMP-embedded file.)

We also define a Creative Commons schema ''http://creativecommons.org/ns#'' whose common prefix is cc.

It currently has the following property:

'''license''' — ''http://creativecommons.org/licenses/by-sa/2.0/'' (Replace with relevant license URL.)

Set '''license''' to maintain a direct reference to the license URL.

== Developer Challenges ==

We have setup some [[XMP developer challenges]] to encourage the use of XMP and also to do some research as to what is already supported and what we support.

== XMP Logo ==
<small>The XMP logo is either a registered trademark or tradmark of the Adobe Systems Incorporated in the United States and/or other countries.</small>