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Course Overview If you have a digital preservation strategy that involves digital files, you’ll know how important it is to understand the file formats in which your data is encoded. To do this comprehensively involves at least three main operations: identifying the format, characterising the format, and validating the format. To put it another way, […]
The tech clinic offers OPF members the opportunity to book one-to-one online sessions to discuss any technical aspects of your work. This might include: getting started with OPF tools, e.g. installation and basic usage; help with integrating open source tools into local automated workflows and systems; investigating problems and issues with open source tools; assistance […]
Inspired by Jenny Micham’s blog post about developing her first file format signature, I thought it would be fun to take a crack at creating one myself. I previously dipped my toe into the world of contributing to PRONOM by looking at a few mis-identifications and multi-identifications, but I had yet to create a file […]
Jenny Mitcham, Digital Archivist at the University of York started a nice snowball rolling last week when she asked “Research data – what does it really look like?” Paul Young at the National Archives, UK, was one of those to respond, to show that perhaps the snowball had been generating momentum for a number of […]
As promised yesterday this is the follow up blog to the refactor of my original DROID SQLite Analysis work. The new version now allows you to produce reports from the format identification tool Siegfried. In this blog I wanted to talk about a small number of other details that can be a bit harder to […]
With the release of the latest Siegfried there was added motivation for me to provide an analysis output for the format identification tool. With ‘double the magic’ there was a lot more for us to explore as analysts, and fingers crossed this release (a refactor) of my SQLite based analysis tool will help with that exploration. Previous […]
FIDO (Format Identification for Digital Objects) is a command-line tool maintained by the OPF and used for identification of digital files based on their PRONOM signature. This webinar will provide an update on the FIDO project by outlining recent improvements to the tool. We will also discuss: Why is format identification so important? What are […]
The latest version of siegfried, 1.5.0, has just been released. The big change is support for a second identifier type, freedesktop.org’s Shared MIME-Info specification.
For anyone dealing with a relatively small number of records, compared to say an internet or data archive, a reasonable process for ingest of material into your digital preservation system might be: 1. Process files with a file format identification tool 2. Per 1. process files with a file format validation tool 3. Per 1. […]
At my workplace, we write a lot of small scripts to encode preservation workflows. These scripts pipeline simple actions like munging metadata, moving files about, and calling other tools such as Tika and ImageMagick. Often these actions are conditional on the format of the file being processed: for example, we only want to run Tika over the formats for […]