Definition |
Technical specifications relating to a moving image resource. For information on punctuation, see the Punctuation section below. |
Guidelines |
Prefer use of a separate field for each unique term. For example, for an IMAX film: |
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| 345 |
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IMAX ǂ2 rdapf |
| 345 |
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ǂb 24 fps |
For 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.
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Undefined |
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2nd Indicator |
Undefined. The 2nd indicator position is undefined and contains a blank.
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Undefined |
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Subfields |
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| ǂa Presentation format |
The format used in the production of a projected image (e.g., Cinerama, IMAX). RDA 3.17, Projection Characteristic of Motion Picture Film, explicitly limits this to the presentation format of actual motion picture film. Presentation format, which is treated in RDA 3.17.2 and recorded here, should not be confused with aspect ratio, which is treated in RDA 7.19 and is recorded most commonly in field 500. This subfield should not be used for any video format. For a list of RDA-controlled terms, see RDA Presentation Format.
| 345 |
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standard sound aperture ǂ2 rdapf |
| 345 |
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standard silent aperture ǂ2 rdapf |
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| ǂb Projection speed |
The speed at which a projection device must be operated to produce the moving image intended. RDA 3.17, Projection Characteristic of Motion Picture Film, explicitly limits this to the projection speed of actual motion picture film. This subfield should not be used for any video format.
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| ǂc Aspect ratio value |
A numerical ratio of the width to the height of a moving image.
| 345 |
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ǂc 16:9 |
| 345 |
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ǂd wide screen |
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| ǂd Aspect ratio designator |
A general description of the ratio of the width to the height of a moving image.
| 345 |
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ǂd letterboxed |
| 345 |
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ǂd mixed aspect ratio |
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| 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.
| 345 |
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Cinerama ǂ2 rdapf |
| 345 |
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ǂb 24 fps |
| 345 |
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stereoscopic ǂ2 rdapf |
| 345 |
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multiprojector ǂ2 rdapf |
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| ǂ3 Materials specified |
For information about subfield ǂ3, see Control Subfields.
| 345 |
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ǂ3 Polyester print ǂb 18 fps |
| 345 |
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ǂ3 Master positive ǂa Techniscope ǂ2 rdapf |
| 345 |
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ǂ3 Master positive ǂb 24 fps |
| 345 |
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ǂ3 Viewing copy ǂa 3D ǂ2 rdapf |
| 345 |
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ǂ3 film reel ǂa standard sound aperture ǂ2 rdapf |
| 345 |
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ǂ3 film reel ǂb 24 fps |
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| 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
For more information on punctuation, including OCLC policy, see section 2.8, Punctuation. |
Indexing |
For indexing and searching information, see Searching WorldCat Indexes, field 345. |
MARC 21 |
For more information, including content designator history, see MARC 21 Format for Bibliographic Data, field 345. |