Technical Metadata

Section: Compression

Name

compression

Definition

Identifies compression characteristics of the file.

compression has the following components:

• Subelements:
  • compressionType
  • compressionRatio

Controlled Vocabulary

N/A

Repeatable

N

Name

compressionType

Label

Compression - Compression Type

Schema

rulib

Definition

Indicates whether the master file is compressed or uncompressed. If compressed and the compression ratio is known, enter the value in Compression ratio.

Usage Note

Uncompressed should be the default value.

Controlled Vocabulary

Compressed; Uncompressed; Unknown

Repeatable

N

Name

compressionRatio

Label

Compression - Compression Ratio

Schema

NISO MIX

Definition

Designates the ratio of compressed file size to uncompressed data.

Usage Note

Should be a positive Integer. For purposes of recording this number, the original size is assumed to be 1, so only the first half of the ratio will be recorded.

Controlled Vocabulary

Free text

Example(s)

10 (for a 10:1 compression ratio); 30 (for a 30:1 compression ratio)

Repeatable

N