RE: How can TDMRep be used in PDF?

The STM Association’s STEC (technology) committee has approved this as a work item, through as far as I know there hasn’t been any substantive progress (this has only just happened). Might be worthwhile getting both groups aligned on where this is likely to go.

Duncan



From: Leonard Rosenthol <lrosenth@adobe.com>
Sent: 09 March 2023 17:08
To: Michael Steidl (NIT) <mwsteidl@newsit.biz>; 'Lizzi, Vincent' <Vincent.Lizzi@taylorandfrancis.com>; public-tdmrep@w3.org
Subject: Re: How can TDMRep be used in PDF?

⛔
This is an external email.
In addition to what Michael mentioned, there are a number of other groups currently working to define a standardized way to embed the TDM data into a assets – be it PDF or other formats.

Leonard

From: Michael Steidl (NIT) <mwsteidl@newsit.biz<mailto:mwsteidl@newsit.biz>>
Date: Thursday, March 9, 2023 at 10:30 AM
To: 'Lizzi, Vincent' <Vincent.Lizzi@taylorandfrancis.com<mailto:Vincent.Lizzi@taylorandfrancis.com>>, public-tdmrep@w3.org<mailto:public-tdmrep@w3.org> <public-tdmrep@w3.org<mailto:public-tdmrep@w3.org>>
Subject: RE: How can TDMRep be used in PDF?

EXTERNAL: Use caution when clicking on links or opening attachments.


Hi Vincent,

XMP is a standard used for PDF and for photos or videos.
I’m from IPTC, the maker of the widely used photo metadata standard for images, and we have a property for embedding a rights expression into XMP:

  *   The Embedded Encoded Rights Expression property, see https://www.iptc.org/std/photometadata/specification/IPTC-PhotoMetadata#embedded-encoded-rights-expression<https://urldefense.com/v3/__https:/nam04.safelinks.protection.outlook.com/?url=https*3A*2F*2Fwww.iptc.org*2Fstd*2Fphotometadata*2Fspecification*2FIPTC-PhotoMetadata*23embedded-encoded-rights-expression&data=05*7C01*7Clrosenth*40adobe.com*7Cf6ecca5b18d1434293c608db20b33b71*7Cfa7b1b5a7b34438794aed2c178decee1*7C0*7C0*7C638139726402196960*7CUnknown*7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0*3D*7C3000*7C*7C*7C&sdata=zDd3x8HSm3IAX0145nICt9ufG7wyyk2*2BtQ*2B6XtRytTI*3D&reserved=0__;JSUlJSUlJSUlJSUlJSUlJSUlJSUlJSUlJSU!!N11eV2iwtfs!rR_5AGNb5ppnBSa1bL0CNx-C4kdrAOFE25gUDHOt8RdbdBNmtpEGTTYdjyvYoBs0CPL98y8DbQnw2-5v$>
  *   It has a structure of three properties – see https://www.iptc.org/std/photometadata/specification/IPTC-PhotoMetadata#embedded-encoded-rights-expression-eere-structure<https://urldefense.com/v3/__https:/nam04.safelinks.protection.outlook.com/?url=https*3A*2F*2Fwww.iptc.org*2Fstd*2Fphotometadata*2Fspecification*2FIPTC-PhotoMetadata*23embedded-encoded-rights-expression-eere-structure&data=05*7C01*7Clrosenth*40adobe.com*7Cf6ecca5b18d1434293c608db20b33b71*7Cfa7b1b5a7b34438794aed2c178decee1*7C0*7C0*7C638139726402196960*7CUnknown*7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0*3D*7C3000*7C*7C*7C&sdata=djC*2BHfDg*2BRG0qlxn3cwMIydiYHe28*2BGz6N*2BmRzvmu4k*3D&reserved=0__;JSUlJSUlJSUlJSUlJSUlJSUlJSUlJSUlJSUlJQ!!N11eV2iwtfs!rR_5AGNb5ppnBSa1bL0CNx-C4kdrAOFE25gUDHOt8RdbdBNmtpEGTTYdjyvYoBs0CPL98y8DbaMK5hJv$>

     *   Encoded Rights Expression: this is an XML element taking text values and in this case you can make a TDMRep policy a single string and put it into this property.
     *   Encoding Type: the TDMRep policy uses JSON-LD and therefore the value of this property must be “application/ld-json”
     *   Rights Expression Language ID: for a TDMRep policy you should use http://www.w3.org/ns/tdmrep<https://urldefense.com/v3/__https:/nam04.safelinks.protection.outlook.com/?url=http*3A*2F*2Fwww.w3.org*2Fns*2Ftdmrep&data=05*7C01*7Clrosenth*40adobe.com*7Cf6ecca5b18d1434293c608db20b33b71*7Cfa7b1b5a7b34438794aed2c178decee1*7C0*7C0*7C638139726402196960*7CUnknown*7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0*3D*7C3000*7C*7C*7C&sdata=LGdVRJFloSkH0k*2FaH6fck6irOzhQ3*2ByrJYI*2BbWNDL*2Bc*3D&reserved=0__;JSUlJSUlJSUlJSUlJSUlJSUlJSUlJSUlJQ!!N11eV2iwtfs!rR_5AGNb5ppnBSa1bL0CNx-C4kdrAOFE25gUDHOt8RdbdBNmtpEGTTYdjyvYoBs0CPL98y8DbegoCwY6$>

This metadata property/structure can be embedded using the quite popular ExifTool<https://urldefense.com/v3/__https:/nam04.safelinks.protection.outlook.com/?url=https*3A*2F*2Fexiftool.org*2F&data=05*7C01*7Clrosenth*40adobe.com*7Cf6ecca5b18d1434293c608db20b33b71*7Cfa7b1b5a7b34438794aed2c178decee1*7C0*7C0*7C638139726402196960*7CUnknown*7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0*3D*7C3000*7C*7C*7C&sdata=1nq4C3XZlZcAJ8om1LIPeUOANfvHAxNbBpWzVdK4PG0*3D&reserved=0__;JSUlJSUlJSUlJSUlJSUlJSUlJSU!!N11eV2iwtfs!rR_5AGNb5ppnBSa1bL0CNx-C4kdrAOFE25gUDHOt8RdbdBNmtpEGTTYdjyvYoBs0CPL98y8DbRxy8sEb$>: a command line tool available on Windows, Mac and Linux. If you are interested I can share a small Python script doing the embedding job on many (PDF) files.

Best,
Michael

=============================================================
Gesendet von / sent by:
Michael W. Steidl
www.linkedin.com/in/michaelwsteidl<https://urldefense.com/v3/__https:/nam04.safelinks.protection.outlook.com/?url=http*3A*2F*2Fwww.linkedin.com*2Fin*2Fmichaelwsteidl&data=05*7C01*7Clrosenth*40adobe.com*7Cf6ecca5b18d1434293c608db20b33b71*7Cfa7b1b5a7b34438794aed2c178decee1*7C0*7C0*7C638139726402353189*7CUnknown*7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0*3D*7C3000*7C*7C*7C&sdata=bgXmJN2lBDXuvR06Uxr0dHYIZ7s60g4es05RJ8tuh68*3D&reserved=0__;JSUlJSUlJSUlJSUlJSUlJSUlJSUl!!N11eV2iwtfs!rR_5AGNb5ppnBSa1bL0CNx-C4kdrAOFE25gUDHOt8RdbdBNmtpEGTTYdjyvYoBs0CPL98y8DbYfo1fal$>
co-Lead of IPTC Photo Metadata Working Group<https://urldefense.com/v3/__https:/nam04.safelinks.protection.outlook.com/?url=https*3A*2F*2Fiptc.org*2Fabout-iptc*2Fwork-structure*2F*23pmd&data=05*7C01*7Clrosenth*40adobe.com*7Cf6ecca5b18d1434293c608db20b33b71*7Cfa7b1b5a7b34438794aed2c178decee1*7C0*7C0*7C638139726402353189*7CUnknown*7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0*3D*7C3000*7C*7C*7C&sdata=A8PvT*2FQEkQtAx0EewovWtmifVZ0dt3dFxff*2BfiBpdRk*3D&reserved=0__;JSUlJSUlJSUlJSUlJSUlJSUlJSUlJSUlJQ!!N11eV2iwtfs!rR_5AGNb5ppnBSa1bL0CNx-C4kdrAOFE25gUDHOt8RdbdBNmtpEGTTYdjyvYoBs0CPL98y8DbcCLdI6w$>
Email: mwsteidl@newsit.biz<https://urldefense.com/v3/__https:/nam04.safelinks.protection.outlook.com/?url=http*3A*2F*2Fwww.newsit.biz*2F&data=05*7C01*7Clrosenth*40adobe.com*7Cf6ecca5b18d1434293c608db20b33b71*7Cfa7b1b5a7b34438794aed2c178decee1*7C0*7C0*7C638139726402353189*7CUnknown*7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0*3D*7C3000*7C*7C*7C&sdata=PhATBWH8mSAtGAURiOgD*2F8u7SztwV4X9ZGxh*2BoNyjVQ*3D&reserved=0__;JSUlJSUlJSUlJSUlJSUlJSUlJSUlJQ!!N11eV2iwtfs!rR_5AGNb5ppnBSa1bL0CNx-C4kdrAOFE25gUDHOt8RdbdBNmtpEGTTYdjyvYoBs0CPL98y8DbXG6mU4U$>
1180 Wien/Vienna – Österreich/Austria

From: Lizzi, Vincent <Vincent.Lizzi@taylorandfrancis.com<mailto:Vincent.Lizzi@taylorandfrancis.com>>
Sent: Thursday, March 9, 2023 3:57 PM
To: public-tdmrep@w3.org<mailto:public-tdmrep@w3.org>
Subject: How can TDMRep be used in PDF?

Dear TDMRep community,

There was a recent notice from W3C that this community group might automatically close soon, so this seems like the time to get a question in for this group. I work for a publisher that distributes content in multiple formats including web pages, EPub, and PDF. The PDF format is still very popular among our readers. The PDF files that we publish contain embedded XMP metadata that provides the title, authors, digital object identifier (DOI), version (using NISO JAV terminology), copyright, and license information. In considering a possibility of someday having to implement TDMRep for our content, the TDMRep Final Community Report shows how TDMRep metadata can be encoded in HTML meta tags which could be used in web pages and EPub files. It is unclear as to whether, or how, TDMRep metadata can be encoded in RDF XML to be included in the XMP metadata of a PDF file. Is this use case far outside of the intended scope of TDMRep? If this is a reasonable use of TDMRep, can you provide any guidance on how to encode TDMRep metadata in the metadata of a PDF file?

Thank you,
Vincent

______________________________________________
Vincent M. Lizzi
Head of Information Standards | Taylor & Francis Group
530 Walnut St., Suite 850, Philadelphia, PA 19106
E-Mail: vincent.lizzi@taylorandfrancis.com<mailto:vincent.lizzi@taylorandfrancis.com>
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