It’s Not Just Integrity: Fixity Data in Digital Sound and Moving Image Files

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Type: 
Blog
Author: 
Kate Murray, Carl Fleischhauer
Year: 
2014
Org.: 
Libray of Congress
Language: 
English
Difficulty: 
Not Applicable
Tags: 
Kennisbank
Topics: 
 

A contribution to LC's digital preservation blog on the increasing practice within the audiovisual community, namely to generate fixity values at the intra-file or part level in addition to the whole file. An overview is provided of the options to create such values and where to store them:several examples of container or “chunk” level hashing,the process of confirming whether a losslessly transcoded file represents the original encoded data authentically,examples to create intra-file fixity values and frame-level checksum values. This chapter in the Digital Curation Manual explains fixity.

Concise overview of the tools in use by the audiovisual community to generate intra-file checksums or checksums for process monitoring, with useful links to the named resources and tools for the several audio and video formats.