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Subject: discussion of the Creative Commons Metadata work

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  • From: Lucas Gonze <lgonze AT panix.com>
  • Cc: cc-metadata AT lists.ibiblio.org
  • Subject: Re: draft document on CC metadata in SMIL
  • Date: Wed, 29 Oct 2003 14:32:25 -0500

Revised draft:
...

Creative Commons Metadata in SMIL
=================================

The scope of this document is informative, not normative. This is a
draft document. Comments and corrections are requested.

General principles
==================

1) Apply SMIL 2.0[1] metadata format[2] to SMIL 1.0[3]. Don't use 1.0
style metadata, because it's unlikely that there are readers that
use it, and because 2.0 style metadata is more compatible with
existing Creative Commons RDF recommendations[4].

2) Don't insert Creative Commons metadata into the rdf:description
metadata format given as an example in the SMIL 2.0 metadata
recommendation, since it is only an example is and somewhat hard to
work with. Insert Creative Commons metadata in a cc:Work element
which would be a peer of rdf:description in a document structured
like the example in the SMIL 2.0 metadata recommendation[2].

For example:
<metadata id="meta-rdf">
<rdf:RDF>
<!-- CC stuff here -->
</rdf:RDF>
</metadata>

Complete Example
================

<smil>
<head>
<metadata id="meta-rdf">
<rdf:RDF
xmlns="http://web.resource.org/cc/";
xmlns:rdf = "http://www.w3.org/1999/02/22-rdf-syntax-ns#";
xmlns:rdfs = "http://www.w3.org/TR/1999/PR-rdf-schema-19990303#";
xmlns:dc = "http://purl.org/metadata/dublin_core#";

<!-- Question: what is this namespace URL? Shouldn't the
namespace URL for SMIL metadata be something real? -->
xmlns:smilmetadata = "http://www.example.org/AudioVideo/.../smil-ns#"; >

<!-- Value of rdf:about attribute should be the URI of your playlist -->
<Work rdf:about="http://www.example.com/smil-cc.smil";>

<!-- The name of your playlist. --->
<dc:title>SMIL CC</dc:title>
<dc:description>An example of how to apply Creative Commons metadata to SMIL resources.</dc:description>

<dc:creator>
<Agent>
<dc:title>Yo-Yo Dyne</dc:title>
</Agent>
</dc:creator>

<dc:rights>
<Agent>
<dc:title>Gnomophone</dc:title>
</Agent>
</dc:rights>

<dc:date>1842</dc:date>

<!-- Mime type of SMIL is application/smil, not text/smil as given in the SMIL recommendation! -->
<dc:format>application/smil</dc:format>

<!-- If your playlist is derived from any others, put the
URL here. Please preserve dc:source elements from
source SMIL files. Put additions at the top of the
list of dc:source elements, so that they are ordered
from newest to oldest. -->
<dc:source>http://example.com/a_prior_smil_resource.smil</dc:source>
<dc:source>http://example.com/value_of_dc:source_in_the_above.smil</ dc:source>

<license rdf:resource="http://creativecommons.org/licenses/by-nd-nc/1.0/"; />
</Work>

<License
rdf:about="http://creativecommons.org/licenses/by-nd-nc/1.0/";>
<permits rdf:resource="http://web.resource.org/cc/Reproduction"; />
<permits rdf:resource="http://web.resource.org/cc/Distribution"; />
<requires rdf:resource="http://web.resource.org/cc/Notice"; />
<requires rdf:resource="http://web.resource.org/cc/Attribution"; />
<prohibits rdf:resource="http://web.resource.org/cc/CommercialUse";
/>
</License>

</rdf:RDF>
</metadata>
</head>

<body>
<seq>

<audio src="http://example.com/mp3/first.mp3"/>
<audio src="http://example.com/mp3/second.mp3"/>
<audio src="http://example.com/mp3/third.mp3"/>

</seq>
</body>
</smil>

Administrative Information
==========================

The URL of this document on the web is
http://gonze.com/cc-smil-draft.txt.

The ideas are derived from an IRC chat on October 28, 2003 between
Mike Linksvayer, Jim Nachlin and Lucas Gonze. This document was
authored by Lucas Gonze with help from Jim Nachlin.

Creation date of this document is October 29, 2003.

References
==========

[1] For SMIL 2.0 specification, see http://www.w3.org/TR/smil20/.
[2] For SMIL metadata recommendation, see http://www.w3.org/TR/2000/WD-smil-boston-20000225/metadata.html.
[3] For SMIL 1.0 specification, see http://www.w3.org/TR/REC-smil/.
[4] For cc:* elements, see http://web.resource.org/cc/schema.rdf. For
text exposition of how to apply Creative Commons metadata, see
http://creativecommons.org/technology/metadata/implement.






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