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:''CRID redirects here. CRID may also refer to a Current Rail Indicator Device, a safety device which indicates the presence of [[third rail]] power; cf. [http://www.trainweb.org/tubeprune/dictionary.htm].''
== Overview ==
A '''Content Reference Identifier''' or '''CRID''' is a concept from the standardization work done by the [[TV-Anytime]] forum. It is or closely matches the concept of the [[Uniform Resource Locator]], or URL, as used on the [[World-Wide Web]]:
{{Quotation|A unit of content, in a [[Broadcasting|broadcast stream]], can be referred to by its globally unique CRID in the same way that a [[webpage]] can be referred to by its globally unique URL on the web.}}<!--source? or is it not a quotation?-->
== Format ==
A CRID is specified much like URLs. In fact, a CRID is a so-called [[Uniform Resource Identifier|URI]]. Typically, the content owner will use their [[Domain Name System|DNS]]-names in a combination with a product-specific name to create globally unique CRIDs. As an example, let's assume that [[BBC]] wanted to make a CRID for the Olympics in China. It may have looked something like this
crid://bbc.co.uk/olympics/2008/
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