The descriptor instantiationMediaType identifies the general, high level nature of the content of a media item. It uses categories that show how content is presented to an observer, e.g., as a sound, text or moving image.
XPATH LOCATION:
/ pbcoreDescriptionDocument / pbcoreInstantiation / instantiationMediaType
USAGE RULES:
Occurs:
1 time or less
May Contain:
4 or less optional attributes, specific:
- source (text, may be empty)
- ref (text, may be empty)
- version (text, may be empty)
- annotation (text, may be empty)
Contained by:
Contained with:
[Any elements used MUST appear in this relative order]
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationIdentifier
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationDate
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationDimensions
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationPhysical
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationDigital
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationStandard
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationLocation
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationMediaType
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationGenerations
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationFileSize
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationTimeStart
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationDuration
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationDataRate
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationColors
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationTracks
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationChannelConfiguration
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationLanguage
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationAlternativeModes
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationEssenceTrack
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationRelation
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationRights
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationAnnotation
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationPart
- /pbcoreDescriptionDocument/pbcoreInstantiation/instantiationExtension
EXAMPLES:
-
<instantiationMediaType source="PBCore instantiationMediaType" ref="http://metadataregistry.org/concept/show/id/1491.html">Moving Image</instantiationMediaType>
VOCABULARIES:
- PBCore instantiationMediaType (recommended)
- IPTC NewsCodes Media type
I don’t understand why a general media type description is assigned to an instantiation. Seems like this would be better placed within the overall . Because whether an moving image is an mp4 file or on a VHS tape, it’s still a moving image.
Hey Amanda, For instance today’s Democracy Now episode as an asset is not really moving image or audio. The instantiations include a CD, DVCam tape, mp3, mp4. Some of those instantiations are a ‘moving image’ media type, some are ‘sound’ media type. A printed transcript for be another, though all the instantiations are renditions of the asset in different forms.
Dave
Hi All –
I think the issue I have with this field, is that it is non-repeating. It uses most of the Dublin Core Type fields, and yet, it doesn’t allow the cataloger to repeat the field, as DC Type does. Here’s the issue: A video can be a physical object, moving image, and sound (if you are describing a non-silent movie existing on a physical format.) So, it seems that instantiationMediaType needs to be repeatable, if it is to adequately describe the item at hand.
Agree? Disagree?
Thanks!
Allison