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347  Digital File Characteristics (R)

Record Type

BIB

Input Standards

Field (Full/Minimal)
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 (Full/Minimal)
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
ǂ1 Real World Object URI (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.

For information on punctuation, see the Punctuation section below.

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:

 
300     1 audio disc ; ǂc 4 3/4 in.
347     audio file ǂ2 rdaft
347     ǂb CD audio

For a JPEG file:

300     287 pages : ǂb illustrations, maps ; ǂc 29 cm + ǂe 1 CD-ROM (sound, color ; 4 3/4 in.)
347     image file ǂ2 rdaft
347     ǂb JPEG
347     ǂd 3.1 megapixels

For a PDF text document:

300     1 computer disc : ǂb illustrations ; ǂc 4 3/4 in.
347     text file ǂ2 rdaft
347     ǂb PDF

For a DVD videodisc:

300     3 videodiscs (approximately 500 min.) : ǂb sound, color ; ǂc 4 3/4 in.
347     video file ǂ2 rdaft
347     ǂb DVD video
347     ǂe region 4 ǂ2 rdare

Under Provider-Neutral practices, file size in 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 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, Best Practices for Music Cataloging Using RDA and MARC 21 for Chapter 7, and "Supplement 1" of the Music Library Association's Supplements to Best Practices for Music Cataloging Using RDA and MARC21.

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.

1st Indicator

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

 
blank character

Undefined

2nd Indicator

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

 
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 RDA File Type.

300     6 audio discs (approximately 7 hr.) ; ǂc 4 3/4 in.
347     audio file ǂ2 rdaft
300     1 computer disc : ǂb sound, color ; ǂc 4 3/4 in. + ǂe 1 user manual
347     image file ǂ2 rdaft
ǂb Encoding format

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

300     1 online resource (xviii, 270 pages)
347     ǂb PDF
300     154 pages : ǂb chiefly color illustrations ; ǂc 27 cm + ǂe 2 videodiscs (4 3/4 in.)
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.

300     1 computer disc (1 data file) : ǂb illustrations
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.

300     1 external hard drive (20 video files) : ǂb black and white, sound
347     ǂd 720x480 pixels
ǂe Regional encoding

A code identifying the region of the world for which a digital file has been encoded. Such coding may prevent the file from being played on a device from a different region. For a list of RDA-controlled terms, see RDA Regional Encoding.

300     1 videodisc (approximately 96 min.) : ǂb sound, color ; ǂc 4 3/4 in.
347     ǂe region 4 ǂ2 rdare
ǂf Encoded bitrate

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

300     97 pages : ǂb portraits (some color) ; ǂc 21 cm + ǂe 3 audio discs (4 3/4 in.) + 1 computer disc (sound ; 4 3/4 in.)
347     ǂ3 computer disc ǂf 32 kbps
ǂ0 Authority record control number or standard number

For information about subfield ǂ0, see Control Subfields.

ǂ1 Real World Object URI

For information about subfield ǂ1, 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.

300     1 audio disc (49 min., 47 sec.) ; ǂc 4 3/4 in.
347     audio file ǂ2 rdaft
347     ǂb CD audio
300     ǂ3 viewing copy ǂa 4 videodiscs (approximately 440 min.) : ǂb sound, color ; ǂc 4 3/4 in.
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.

300     1 online resource (i, 23 paginated leaves) : ǂb illuminations
347     ǂ3 Compressed thumbnail ǂa image file ǂ2 rdaft
347     ǂ3 Compressed thumbnail ǂb JPEG
347     ǂ3 Uncompressed thumbnail ǂa image file ǂ2 rdaft
347     ǂ3 Uncompressed thumbnail ǂb TIFF
300     2 videodiscs (120 min.) : ǂb sound, color ; ǂc 4 3/4 in.
347     ǂ3 4K HD ǂa video file ǂ2 rdaft
347     ǂb 4K Ultra HD Blu-ray
347     ǂ3 Blu-ray ǂa video file ǂ2 rdaft
347     ǂb Blu-ray
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 manually 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

For records containing or omitting punctuation, follow these instructions:

  • Include incidental punctuation needed within any subfields, e.g., commas, periods (following abbreviations or initials), etc.
  • Omit punctuation preceding each subfield unless the preceding subfield ends with an abbreviation or initial
  • Omit the terminal period at the end of the field unless the last word is an abbreviation or initial
347     video file ǂ2 rdaft

For more information on punctuation, including OCLC policy, see section 2.8, Punctuation.

Indexing

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

MARC 21

For more information, including content designator history, see MARC 21 Format for Bibliographic Data, field 347.

This page last revised: April 21, 2022