"This is the PBCore version 1.1.1.1 XML schema. All element
descriptions can be found at http://www.pbcore.org"
"The Master Container assembles together all collections
of PBCore knowledge items. For PBCore these knowledge items are metadata descriptions of
media. The MasterContainer is expressed as a document that hierarchically structures all
the knowledge items and metadata terms and values related to a single data record
associated with a media item. In our XML Schema Definition, the MasterContainer is
referred to as the 'PBCoreDescriptionDocument.'"
"The descriptor identifier is used to
reference or identify the entire record of metadata descriptions for a
media item and exists at the top level for a PBCore description and
its associated description document (XML). Best practice is to
identify the media item (whether analog or digital) by means of an
unambiguous string or number corresponding to an established or formal
identification system if one exists. Otherwise, use an identification
method that is in use within your agency, station, production company,
office, or institution."
"The descriptor identifierSource is
used in combination with the unambiguous reference or identifier for a
media item found in the descriptor identifier. Thus PBCore provides
not only a locator number, but also an agency or institution who
assigned it. Both exist at the top level for a PBCore description and
its associated description document (XML)."
"The descriptor title is a name given
to the media item you are cataloging. It is the unique name everyone
should use to refer to or search for a particular media item. There
are obviously many types of titles a media item may have, such as a
series title, episode title, segment title, or project title. Use the
descriptor titleType to indicate the type of title you are assigning
to the media item."
"The descriptor titleType is a
companion metadata field associated with the descriptor title. For a
title you give to a media item, you may wish to inform end users what
type of title it is (see the picklist of recommended vocabulary
terms)."
"Picklist at
http://www.utah.edu/cpbmetadata/PBCore/picklists/picklist_titleType.html"
"The descriptor subject is used to
assign topical headings or keywords that portray the intellectual
content of the media item you are cataloging. Typically, a subject is
expressed by a limited number of keywords, key phrases, or even
specific classification codes. Controlled vocabularies, authorities,
or formal classification schemes may be employed when assigning
descriptive subject terms (rather than using random or ad hoc
terminology)."
"Use reference at
http://www.utah.edu/cpbmetadata/PBCore/subject.html"
"If subjects are assigned to a media
item using the descriptor subject and the terms used are derived from
a specific authority or classification scheme, use
subjectAuthorityUsed to identify whose vocabularies and terms were
used."
"The metadata element description uses
free-form text or a narrative to report general notes, abstracts, or
summaries about the intellectual content of a media item you are
cataloguing. The information may be in the form of a paragraph giving
an individual program description, anecdotal interpretations, or brief
content reviews. The description may also consist of outlines, lists,
bullet points, rundowns, edit decision lists, indexes, or tables of
content."
"The descriptor descriptionType is a
companion metadata field to the element description. The purpose of
descriptionType is to identify the nature of the actual description
and flag the form of presentation for the information."
"Picklist at
http://www.utah.edu/cpbmetadata/PBCore/picklists/picklist_descriptionType.html"
"The descriptor genre describes the
manner in which the intellectual content of a media item is presented,
viewed or heard by a user. It indicates the structure of the
presentation, as well as the topical nature of the content in a
generalized form."
"Picklist at
http://www.utah.edu/cpbmetadata/PBCore/picklists/picklist_genre.html"
"If genre keywords are assigned to a
media item using the descriptor genre and the terms used are derived
from a specific authority or classification scheme, use
genreAuthorityUsed to identify whose vocabularies and terms were used.
PBcore supplies its own picklist of terms, but others may be employed
as long as the authority for a picklist is identified."
When genreAuthorityUsed is not used,
the default is understoond to be PBCore Genre
List.
"The descriptor relationType identifies
the type of intellectual content bond between a media item you are
cataloging and some other related media item."
"Picklist at
http://www.utah.edu/cpbmetadata/PBCore/picklists/picklist_relationType.html"
"Once the type of relationship between
two media items is identified byusing the descriptor relationType,
then this companion descriptor relationIdentifier is used to provide a
name, locator, accession, identification number or ID where the
related item can be obtained or found. The cross reference uses a
unique identifier."
"The descriptor coverage uses keywords
to identify a span of space or time that is expressed by the
intellectual content of a media item. Coverage in intellectual content
may be expressed spatially by geographic location. Actual place names
may be used. Numeric coordinates and geo-spatial data are also
allowable, if useful or supplied. Coverage in intellectual content may
also be expressed temporally by a date, period, era, or time-based
event. The PBCore metadata element coverage houses the actual spatial
or temporal keywords. The companion descriptor coverageType is used to
identify the type of keywords that are being used."
"Use reference at
http://www.utah.edu/cpbmetadata/PBCore/coverage.html"
"Whereas the PBCore metadata element
coverage uses keywords and descriptors to identify a span of space
or time that is expressed by the intellectual content of a media
item, coverageType is used to identify the actual type of keywords
that are being used. Coverage in intellectual content may be
expressed spatially by geographic location. Coverage in
intellectual content may also be expressed temporally by a date,
period, era, or time-based event. coverageType provides a picklist
of coverage types, namely *spatial* or *temporal*."
"The descriptor audienceLevel
identifies a type of audience, viewer, or listener for whom the media
item you are cataloging is primarily designed or educationally
useful."
"Picklist at
http://www.utah.edu/cpbmetadata/PBCore/picklists/picklist_audienceLevel.html"
"The descriptor audienceRating
designates the type of users for whom a media item is intended or
judged appropriate in terms of its intellectual content. Standard
ratings have been crafted by the broadcast television and film
industries and are used as flags for audience or age-appropriate
materials."
"Picklist at
http://www.utah.edu/cpbmetadata/PBCore/picklists/picklist_audienceRating.html"
"The descriptor creator identifies a
person or organization primarily responsible for creating a media
item. The creator may be considered an author and could be one or more
people, a business, organization, group, project or service."
"Use the descriptor creatorRole to
identify the role played by the person or group identified in the
companion descriptor creator. Unlike print resources, there is usually
no single role, like an author, who has primary responsibility for the
creation of media items such as audio, video, film assets, and their
digital renditions. For these media, creators can fill many different
roles, such as the instructor for a video course, the interviewee from
a video history program, or the director of a program or film (if they
are identified as the primary creator for a media item)."
"Picklist at
http://www.utah.edu/cpbmetadata/PBCore/picklists/picklist_creatorRole.html"
"The descriptor contributor identifies
a person or organization that has made substantial creative
contributions to the intellectual content within a media item. This
contribution is considered to be secondary to the primary author(s)
(person or organization) identified in the descriptor
creator."
"Use the descriptor contributorRole to
identify the role played by the person or group identified in the
companion descriptor contributor."
"Picklist at
http://www.utah.edu/cpbmetadata/PBCore/picklists/picklist_contributorRole.html"
"The descriptor publisher identifies a
person or organization primarily responsible for distributing or
making a media item available to others. The publisher may be a
person, a business, organization, group, project or
service."
"Use the descriptor publisherRole to
identify the role played by the specific publisher or publishing
entity identified in the companion descriptor publisher."
"Picklist at
http://www.utah.edu/cpbmetadata/PBCore/picklists/picklist_publisherRole.html"
"Use the descriptor rightsSummary as an
all-purpose container field to identify information about copyrights
and property rights held in and over a media item, whether they are
open access or restricted in some way. If dates, times and
availability periods are associated with a right, include them. End
user permissions, constraints and obligations may also be identified,
as needed."
"Use the descriptor dateCreated to
specify the creation date for a particular version or rendition of a
media item across its life cycle. It is the moment in time that the
media item was finalized during its production process and is
forwarded to other divisions or agencies to make it ready for
publication or distribution. A specific time may also be associated
with the date."
"The descriptor dateIssued specifies
the formal date for a particular version or rendition of a media item
has been made ready or officially released for distribution,
publication or consumption. A specific time may also be associated
with the date."
"Use the descriptor formatPhysical to
identify the format of a particular version or rendition of a media
item as it exists in an actual physical form that occupies physical
space (e.g., a tape on a shelf), rather than as a digital file
residing on a server or hard drive."
"Picklist at
http://www.utah.edu/cpbmetadata/PBCore/picklists/picklist_formatPhysical.html"
"Use the descriptor formatDigital to
identify the format of a particular version or rendition of a media
item as it exists in its digital form, i.e., as a digital file on a
server or hard drive. Digital media formats may be expressed with
formal Internet MIME types."
"MIME types change often see references
at http://www.utah.edu/cpbmetadata/PBCore/formatDigital.html"
"Picklist may not be up to date at
http://www.utah.edu/cpbmetadata/PBCore/picklists/picklist_formatDigital.html"
"The descriptor formatLocation is
considered to be an "address for a media item." For an organization or
producer acting as caretaker of a media resource, formatLocation may
contain information about a specific shelf location for an asset,
including an organization's name, departmental name, shelf ID and
contact information. The formatLocation for a data file or web page
may include domain, path, filename or html page."
"The descriptor formatMediaType
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 or text or moving image."
"Picklist at
http://www.utah.edu/cpbmetadata/PBCore/picklists/picklist_formatMediaType.html"
"The descriptor formatGenerations
identifies the particular use or manner in which a version or
rendition of a media item is used, e.g., Audio/Narration or Moving
image/Backup master."
"Picklist at
http://www.utah.edu/cpbmetadata/PBCore/picklists/picklist_formatGenerations.html"
"Use the descriptor formatStandard to
identify a larger technical system/standard or overarching media
architecture under which various media formats exist, e.g., NTSC is a
system/standard under which many video formats exist."
"Picklist at
http://www.utah.edu/cpbmetadata/PBCore/picklists/picklist_formatStandard.html"
"The descriptor formatEncoding
identifies how the actual information in a media item is compressed,
interpreted, or formulated using a particular scheme. Identifying the
encoding used is beneficial for a number of reasons, including as a
way to achieve reversible compression; for the construction of
document indices to facilitate searching and access; or for efficient
distribution of the information across data networks with differing
bandwidths or pipeline capacities."
"Use the descriptor formatFileSize to
indicate the storage requirements or file size of a digital media
item. As a standard, express the file size in
bytes."
"The descriptor formatTimeStart
provides a time stamp for the beginning point of playback for a
time-based media item, such as digital video or audio. Use in
combination with formatDuration to identify a sequence or segment of a
media item that has a fixed start time and end
time."
"The descriptor formatDuration provides
a timestamp for the overall length or duration of a time-based media
item. It represents the playback time."
"The descriptor formatDataRate is
expresses the amount of data in a digital media file that is encoded,
delivered or distributed, for every second of time. Although optimal
data rates are often dependent on the codec used to compress and
encode a digital file, generally speaking, a larger data rate
translates into a better quality playback experience, for example 56
kilobits/second vs. 1 megabit/second."
"For a media item (specifically, audio,
video, or image), the descriptor formatBitDepth measures "How Much"
data is sampled when information is digitized, encoded, or converted.
Bit depth is measured in bits and is an indicator of the perceived
viewing or playback quality of a media item (the higher the bit depth,
the greater the fidelity)."
"Picklist at
http://www.utah.edu/cpbmetadata/PBCore/picklists/picklist_formatBitDepth.html"
"For a media item (specifically audio),
the descriptor formatSamplingRate measures "How Often " data is
sampled when information is digitized. For a digital audio signal, the
sampling rate is measured in kiloHertz and is an indicator of the
perceived playback quality of the media item (the higher the sampling
rate, the greater the fidelity)."
"Picklist at
http://www.utah.edu/cpbmetadata/PBCore/picklists/picklist_formatSampRate.html"
"The descriptor formatFrameSize
indicates the horizontal and vertical resolution of a format type. It
may be expressed in pixels, pixels per inch, or in the case of ATSC
digital TV, a combination of pixels measured horizontally vs. the
number of pixels of image/resolution data stacked vertically
(interlaced and progressive scan)."
"Picklist at
http://www.utah.edu/cpbmetadata/PBCore/picklists/picklist_formatFrameSize.html"
"The descriptor formatAspectRatio
indicates the ratio of horizontal to vertical proportions in the
display of an static image or moving image."
"Picklist at
http://www.utah.edu/cpbmetadata/PBCore/picklists/picklist_FormatAspRatio.html"
"The descriptor formatFrameRate
indicates the frames per second found in a video, motion sequence,
flash file, or animation's playback or display."
"Picklist at
http://www.utah.edu/cpbmetadata/PBCore/picklists/picklist_formatFrameRate.html"
"The descriptor formatColors indicates
the overall color, grayscale, or black and white nature of a media
item, as a single occurrence or combination of occurrences in or
throughout the media item."
"http://www.utah.edu/cpbmetadata/PBCore/picklists/picklist_formatColors.html"
"The descriptor formatTracks is simply
intended to indicate the number and type of tracks that are found in a
media item, whether it is analog or digital. For example, 1 video
track, 2 audio tracks, 1 text track, 1 sprite track, etc. Other
configuration information specific to these identified tracks should
be described using formatChannelConfiguration."
"The descriptor
formatChannelConfiguration is designed to indicate the arrangement or
configuration of specific channels or layers of information within a
media item's tracks. Examples are 2-track mono, 8 track stereo, or
video track with alpha channel."
"The descriptor language identifies the
primary language of a media item's audio or text. Alternative audio or
text tracks and their associated languages should be identified using
the descriptor alternativeModes."
"Use reference at
http://www.utah.edu/cpbmetadata/PBCore/language.html"
"The descriptor alternativeModes is a
catch-all metadata element that identifies equivalent alternatives to
the primary visual, sound or textual information that exists in a
media item. These are modes that offer alternative ways to see, hear,
and read the content of a media item. Examples include DVI
(Descriptive Video Information), SAP (Supplementary Audio Program),
ClosedCaptions, OpenCaptions, Subtitles, Language Dubs, and
Transcripts. For each instance of available alternativeModes, the mode
and its associated language should be identified together, if
applicable. Examples include 'SAP in English,' 'SAP in Spanish,'
'Subtitle in French,' 'OpenCaption in Arabic.'"
"The descriptor
dateAvailableStart specifies a specific start date for the
availability of a version or rendition of a media item. It
may refer to start dates for the availability of a program
that is broadcast locally, regionally, nationally or
internationally, or for web-based distribution. A specific
time may also be associated with the
date."
"The descriptor
dateAvailableEnd specifies a specific end date for the
availability of a version or rendition of a media item. It
may refer to end dates for the availability of a program that
is broadcast locally, regionally, nationally or
internationally, or for web-based distribution. A specific
time may also be associated with the
date."
"The descriptor
formatIdentifier employs an unambiguous reference or
identifier for a particular rendition/instantiation of a
media item. Best practice is to identify the media item
(whether analog or digital) by means of a string or number
corresponding to an established or formal identification
system if one exists. Otherwise, use an identification method
that is in use within your agency, station, production
company, office, or institution."
"The descriptor
formatIdentifierSource is used in combination with the
unambiguous reference or identifier for a
rendition/instantiation of a media item as found in the
descriptor formatIdentifier. Thus PBCore provides not only a
locator number, but also indicates an agency or institution
who assigned it."
"The descriptor annotation is
a stand-alone PBCore element where you can catalog any
supplementary information about a media item or the metadata
used to describe it. annotation clarifies element values,
terms, descriptors, and vocabularies that may not be
otherwise sufficiently understood."
"The descriptor extension provides
metadata descriptions crafted into metadata dictionaries and schemas
outside of the PBCore Metadata Dictionary Project. These extensions
fulfill the metadata requirements for communities identifying and
describing their own types of media with specialized, custom
terminologies."
"If metadata extensions to PBCore are
assigned to a media item with the descriptor extension, and the terms
used are derived from a specific authority or metadata scheme, use
extensionAuthorityUsed to identify whose metadata extensions are being
used."