Open Video And Metadata Presentation
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Transcript of Open Video And Metadata Presentation
Fred BenensonOpen Video Conference, June 20th [email protected] Manager, Creative Commons
COpen Video & Metadata
Saturday, June 20, 2009
What is C?We’re a 501c3 corporation headquartered in
San Francisco with 30 employees around the world.We’re a non-profit.We do not offer legal services per se.
We offer free legal and technology tools that allow creators to publish their works on more flexible terms than standard copyright.
Terms that allow public sharing, reuse, and remix.
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Why do we do what we do?
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Two Reasons
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#1
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Analog Media
AllPossible
Uses of a Work
Uses Implicating
© Law
Fair Uses
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Digital Media
*Where every use is a copy.
Uses Implicating
© Law
AllPossible
Uses of a Work*
Fair Uses
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#2
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The State of theCommons Prior to 2002
Pre-1923 works, Federal Government Works, etc.
Orphan Works
Everything from Dinsey filmsto your notes, to most of theweb.
Default Automatic © All Rights ReservedPublic Domain
No Rights Reserved
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Introducing:
Pre-1923 works, Federal Government Works, etc. Everything from Dinsey films
to your notes, to most of theweb.
Orphan Works
c
CNo Rights Reserved All Rights ReservedSome Rights Reserved
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What does C actually do?
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Attribution
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ShareAlike
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NoDerivatives
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NonCommercial
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Three Different Formats
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Some Considerations
Public licenses are irrevocable and perpetualHowever works can be removed from public and their licenses can be changed
CC licenses are non-exclusiveDual licensing
Creative Commons licenses do not preclude fair uses, fair dealing, etc.
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Semantic Web Metadata (RDF, RDFa)
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“The Resource Description Framework (RDF) is a family of World Wide Web Consortium (W3C) specifications originally designed as a metadata data model. It has come to be used as a general method for conceptual description or modeling of information that is implemented in web resources; using a variety of syntax formats.” - Wikipedia
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“[Simple] Wikipedia does not yet have an article with this name.” - Simple Wikipedia
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RDF, Really
“Triple” statements.<Fred> <is giving> <a talk on RDF>.<This work> <is licensed> <under CC BY>.
Serialized XML fileLike RSS, sort of.
Vocabularies to describe anything Using URIs
Some Microformats are RDF, but not all.Saturday, June 20, 2009
RDFa
The “a” is for “attribute”Using XHTML meta and link attributes.
A good compromise with the goals of Microformats
Now a W3C RecommendationccREL is expressed in RDFaGoogle, Yahoo, MySpace, Digg, etc.
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<a rel="license" href="http://creativecommons.org/licenses/by/3.0/us/"><img alt="Creative Commons License" style="border-width:0" src="http://i.creativecommons.org/l/by/3.0/us/88x31.png" /></a><br />
<span xmlns:dc="http://purl.org/dc/terms/" href="http://purl.org/dc/dcmitype/Text"
property="dc:title" rel="dc:type">RDFa FAQ</span> by <a xmlns:cc="http://creativecommons.org/ns#" href="www.example.com" property="cc:attributionName" rel="cc:attributionURL">John Doe</a>
is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by/3.0/us/">Creative Commons
Attribution 3.0 United States License</a>.<br />Based on a work at <a xmlns:dc="http://purl.org/dc/terms/1.1/" href="http://wiki.creativecommons.org/RDFa"
rel="dc:source">wiki.creativecommons.org</a>.<br />Permissions beyond the scope of this license may be available at <a
xmlns:cc="http://creativecommons.org/ns#" href="http://moreperms" rel="cc:morePermissions">http://moreperms</a>.
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<span xmlns:dc="http://purl.org/dc//" href="http://purl.org/dc/dcmitype/Text" property="dc:title" rel="dc:type">RDFa FAQ</span>
dc:title/dc:type
dc is Dublin Core Title, Author, Type, etc.
The inner HTML of the tag is “RDFa FAQ” which is the title of the work.
This is a text document, so we point dc:type to the Dublin Core definition for "Text" using the rel tag.
Another document Type that could be specified with the href is http://purl.org/dc/dcmitype/StillImage or http://purl.org/dc/dcmitype/Sound, depending on the medium being licensed.
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<a xmlns:cc="http://creativecommons.org/ns#" href="http://www.example.com" property="cc:attributionName" rel="cc:attributionURL">John Doe</a>
cc:attributionName/cc:attributionURL
CC is using its own XML namespace, abbreviated using cc:
The property is CC's AttributionName attribute, the value is the content inside the anchor tag (in this case, the fictitious John Doe), and a relationship of cc:AttributionURL is defined as being http://www.example.com.
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<a rel="license" href="http://creativecommons.org/licenses/by-sa/3.0/us/">Creative Commons Attribution-Share Alike 3.0 United States License</a>.
rel="license"
Most basic and fundamental part of CC's usage of RDFa
Always included in the HTML offered, regardless of whether users fill out the "Additional Information" section.
The rel specifies the relationship of the href's URL. In this case, the relationship is "license" and the URL is a standard Creative Commons license.
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Based on a work at <a xmlns:dc="http://purl.org/dc//" href="http://wiki.creativecommons.org/RDFa" rel="dc:source">wiki.creativecommons.org</a>
dc:source
Similar to dc:title, dc:source specifies where the original source of the file is located.
Flickr does this and its awesome.
In this case it is pointing to http://wiki.creativecommons.org/RDFa
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Permissions beyond the scope of this license may be available at <a xmlns:cc="http://creativecommons.org/ns#" href="http://moreperms" rel="cc:morePermissions">http://moreperms</a>.
cc:morePermissions
Part of the CC+ protocol, creators can specify a URL where re-users of CC licenses can obtain more rights to the work.
Here, the nonexistent URL of http://moreperms is used as a placeholder.
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File Metadata (XMP, Ogg, etc.)
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liblicenseLow-level license metadata integration for applications.Features:
Extract and write license information for filesSupports enumeration of available licensesWraps internationalized license information for Creative
Commons licensesBindings for dynamic languages (currently Python and Ruby)Extensible support for file types using module systemNo specific GUI library dependency allows applications to
build the graphical chooser most appropriate for their platform.
FLAC, MP3, XMP, Ogg, GSF.
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License Tagger Demo App
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$> ffmpeg2theora -a 3 -v 7 --pp de,tn:256:512:1024 \--artist "Fred Benenson" --title "RDFa Video" \--date "June 2009" --location "NY, NY" \
--organization "Creative Commons (http://www.creativecommons.org)" \--copyright "Copyright 2009, Fred Benenson" \
--license "Creative Commons Attribution-ShareAlike 3.0" \-o video.ogv video.dv
ffmpeg2theora
Ogg Theora supports a license field as well as other metadata.
VLC can expose it.
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Standardized Assets
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Help?!
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How C Uses Open Video &
Metadata
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<video src="http://player.uncensoredinterview.com/e/11222.ogv" controls width="384" height="216"><br /><object type="application/x-shockwave-flash" width="384" height="216"
data="http://player.uncensoredinterview.com/e/11222.swf"><param name="movie" value="http://player.uncensoredinterview.com/e/
11222.swf"></param><param name="allowfullscreen" value="true"></param></object></video>
Try Ogg Player Fall Back to Flash Player
Firefox 3.5, Chrome natively supports Ogg + <video> within HTML5
Safari, IE? Anyone?
Push to default YouTube to OGV instead of H.264 No good excuse from Google.
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