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cc-metadata - Re: [cc-metadata] Standardizing JPEG licensing

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Subject: discussion of the Creative Commons Metadata work

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  • From: "Nathan R. Yergler" <nathan AT yergler.net>
  • To: discussion of the Creative Commons Metadata work <cc-metadata AT lists.ibiblio.org>
  • Subject: Re: [cc-metadata] Standardizing JPEG licensing
  • Date: Tue, 02 Aug 2005 08:31:37 -0500

Mike and I spoke about this yesterday afternoon and came to the conclusion that we really need to support both EXIF and XMP embedding. They both have interested audiences, and we can probably leverage them better by supporting both approaches independently or simultaneously.

The CC XMP specification (http://creativecommons.org/technology/xmp) already lays out two possible formats for the Copyright field, which are minor distinctions upon what Christopher suggested. In particular they omit the copyright owner, presumably because XMP (and EXIF) provides other tags which are more appropriate for that information. The two possibly formats for the copyright statement are:

This work is licensed to the public under the Creative Commons Attribution-ShareAlike license http://creativecommons.org/licenses/by-sa/2.0/

and

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/metadata.html

The difference being the "verify at [URL]" statement at the end of the statement. The proposal is that either format will be considered valid. This allows users to make statements about the license without having to use verification RDF. Unless there are objections or further refinements people would like to see, I'll write up a specification page using this format.

Nathan
/

/

EXIF is very similar to TCOP in MP3, and ICOP in MP2/4, so I lean toward
supporting in audio and video. I do recommend a slight modifier of how the
text should read:

Instead of:

C 1995 Example Photographer. Licensed to the public under
http://creativcommons.org/licenses/by/2.0/ verify at
http://example.com/licenseinfo

C 2005 Example Photographer <email AT example.com> -- This work is licensed to
the public under the Creative Commons Attribution-NonCommercial-ShareAlike
License http://creativecommons.org/licenses/by-nc-sa/2.5/ verify at
http://example.com/licenseinfo

-- Christopher Allen

------------------------------------------------------------------------
.. Christopher Allen Alacrity Management ..
.. <ChristopherA at AlacrityManagement.com> 1563 Solano Ave Ste 353 ..
.. blog: www.LifeWithAlacrity.com o510/649-4030 Berkeley, CA 94707 ..


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