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347  Digital File Characteristics (R)

Record Type

BIB

Input Standards

Required if applicable/Required if applicable
1st Indicator  Undefined
blank character Undefined
2nd Indicator  Undefined
blank character Undefined
Subfields (R=Repeatable  NR=Nonrepeatable) Input Standards
ǂa File type (R) Required if applicable/Optional
ǂb Encoding format (R) Required if applicable/Optional
ǂc File size (R) Required if applicable/Optional
ǂd Resolution (R) Required if applicable/Optional
ǂe Regional encoding (R) Required if applicable/Optional
ǂf Encoded bitrate (R) Required if applicable/Optional
ǂ0 Authority record control number or standard number (R) Optional/Optional
ǂ2 Source (NR) Required if applicable/Required if applicable
ǂ3 Materials specified (NR) Optional/Optional
ǂ6 Linkage (NR) System supplied/System supplied
ǂ8 Field link and sequence number (R) Optional/Optional

Definition

Technical specifications relating to digital encoding of text, image, audio, video, and other types of data in a tangible resource. This information could also be recorded in field 300 subfield ǂb. File type (subfield ǂa) and file size (subfield ǂc) are core elements under RDA for cartographic materials only.

Guidelines

Use field 347 for both tangible and online electronic resources.

Prefer use of a separate field for each unique term. For example, for an audio CD:

 
347     audio file ǂ2 rdaft
347     ǂb CD audio

For a JPEG file:

347     image file ǂ2 rdaft
347     ǂb JPEG
347     ǂd 3.1 megapixels

For a PDF text document:

347     text file ǂ2 rdaft
347     ǂb PDF

For a DVD videodisc:

347     video file ǂ2 rdaft
347     ǂb DVD video
347     ǂe region 4 ǂ2 rdare

Under Provider-Neutral practices, file size (347 subfield ǂc) should be omitted for online resources because it may differ from one iteration to another. See Provider-Neutral E-Resource MARC Record Guide: P-N/RDA Version (http://www.loc.gov/aba/pcc/scs/documents/PN-RDA-Combined.docx) for additional guidance.

For guidance on describing and encoding the attributes of notated music and audio carriers, see the Music Library Association's Best Practices for Music Cataloging Using RDA and MARC 21 for Chapter 3 (http://access.rdatoolkit.org/mlabpchp3_mlabp3-31.html), Best Practices for Music Cataloging Using RDA and MARC 21 for Chapter 7 (http://access.rdatoolkit.org/mlabpchp7_mlabp7-31.html), and "Supplement 1" of the Music Library Association's Supplements to Best Practices for Music Cataloging Using RDA and MARC21 (http://c.ymcdn.com/sites/www.musiclibraryassoc.org/resource/resmgr/BCC_RDA/Supp_RDA_Best_Practices.pdf).

For additional guidance on describing and encoding the attributes of video recording carriers see OLAC Online Audiovisual Catalogers' Best Practices for Cataloging DVD-Video and Blu-Ray Discs (http://olacinc.org/sites/capc_files/DVD_RDA_Guide.pdf).

1st Indicator

Undefined. The 1st indicator position is undefined and contains a blank ( blank character ).

 
blank character Undefined

2nd Indicator

Undefined. The 2nd indicator position is undefined and contains a blank ( blank character ).

 
blank character Undefined

Subfields

 
ǂa File type

A general type of data content encoded in a computer file. For a list of RDA-controlled terms, see the RDA Registry (http://www.rdaregistry.info/termList/fileType/).

347     audio file ǂ2 rdaft
347     image file ǂ2 rdaft
ǂb Encoding format

A schema, standard, etc., used to encode the digital content of a resource.

347     ǂb PDF
347     ǂb Blu-ray
ǂc File size

The number of bytes in a digital file. Under Provider-Neutral practices, file size should be omitted for online resources because it may differ from one iteration to another.

347     ǂc 182 KB
ǂd Resolution

The clarity or fineness of detail in a digital image, expressed by the measurement of the image in pixels, etc.

347     ǂd 3.1 megapixels
ǂe Regional encoding

A code identifying the region of the world for which a digital file has been encoded which may prevent the file from being played on a player from a different region. For a list of RDA-controlled terms, see the RDA Registry (http://www.rdaregistry.info/termList/RDARegionalEncoding/).

347     ǂe region 4 ǂ2 rdare
ǂf Encoded bitrate

The speed at which streaming audio or video is designed to play.

347     ǂf 32 kbps
ǂ0 Authority record control number or standard number

For information about subfield ǂ0, see Control Subfields.

ǂ2 Source

Identification of the source of the term when it is from a controlled list. For more information about subfield ǂ2, see Control Subfields.

347     audio file ǂ2 rdaft
347     ǂb CD audio
347     video file ǂ2 rdaft
347     ǂb DVD video
347     ǂe region 1 ǂ2 rdare
ǂ3 Materials specified

For information about subfield ǂ3, see Control Subfields.

347     ǂ3 Compressed thumbnail ǂa image file ǂ2 rdaft
347     ǂ3 Compressed thumbnail ǂb JPEG
347     ǂ3 Compressed thumbnail ǂd 3.1 megapixels
347     ǂ3 Uncompressed thumbnail ǂa image file ǂ2 rdaft
347     ǂ3 Uncompressed thumbnail ǂb TIFF
347     ǂ3 Uncompressed thumbnail ǂd 8 megapixels
ǂ6 Linkage

Data that link fields when non-Latin script is entered. This subfield is system supplied and does not appear in OCLC online displays. Do not add subfield ǂ6. For more information about subfield ǂ6, see Control Subfields.

ǂ8 Field link and sequence number

For information about subfield ǂ8, see Control Subfields.

Punctuation

Omit punctuation except after an abbreviation.

Indexing

For indexing and searching information, see Searching WorldCat Indexes, field 347.

This page last revised: April 6, 2018