Library of Congress >> MARC >> Bibliographic >> 3XX >> 347

347 - Digital File Characteristics (R)


MARC 21 Bibliographic - full
September 2011

First Indicator Second Indicator
Undefined
# - Undefined

Undefined
# - Undefined


Subfield Codes
  • $a - File type (R)
  • $b - Encoding format (R)
  • $c - File size (R)
  • $d - Resolution (R)
  • $e - Regional encoding (R)
  • $f - Transmission speed (R)
  • $0 - Authority record control number or standard number (R)
  • $2 - Source (NR)
  • $3 - Materials specified (NR)
  • $6 - Linkage (NR)
  • $8 - Field link and sequence number (R)

FIELD DEFINITION AND SCOPE

Technical specification relating to the digital encoding of text, image, audio, video, and other types of data in a resource. This information could also be recorded in field 300 (Physical Description) $b (Other physical details).


GUIDELINES FOR APPLYING CONTENT DESIGNATORS

INDICATORS

SUBFIELD CODES

$a - File type

A general type of data content encoded in a computer file.

347 ##$aaudio file$bCD audio$2rda

$b - Encoding format

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

347 ##$atext file$bPDF$2rda
347 ##$avideo file$bBlu-Ray$2rda

$c - File size

The number of bytes in a digital file.

347 ##$adata file$bXML$c182 KB$2rda

$d - Resolution

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

347 ##$aimage file$bJPEG$d3.1 megapixels$2rda

$e - 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.

347 ##$avideo file$bDVD video$eregion 4$2rda

$f - Transmission speed

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

347 ##$aaudio file$bMP3$f32 kbps$2rda

$0 - Authority record control number or standard number

See description of this subfield in Appendix A: Control Subfields.

$2 - Source

Identification of the source of terms when they are from a controlled list.

$3 - Materials specified

Part of the described materials to which the field applies.

$6 - Linkage

See description of this subfield in Appendix A: Control Subfields.

$8 - Field link and sequence number

See description of this subfield in Appendix A: Control Subfields.


CONTENT DESIGNATOR HISTORY

Field 347 - Digital File Characteristics [NEW, 2011]

Library of Congress >> MARC >> Bibliographic >> 3XX >> 347
(09/01/2011)
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