Our blogs are written by contributors from the international digital preservation community. You can find information on a wide range of topics covering tools, project news, case studies and best practice. Everyone is welcome to post a blog and join in the discussion.
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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 […]
In a recent blog post, Gary McGath, JHOVE’s former developer and maintainer, questioned whether JHOVE maintenance had ceased. While this is not the case, he is right in pointing out that the Open Preservation Foundation’s resources are limited and that we have other commitments. JHOVE is governed by a Product Board who meet once a […]
By Carl Wilson, posted in Carl Wilson's Blog
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 […]
The British Library’s Digital Preservation Team is sometimes asked to help resolve the preservation planning challenges of Library colleagues and other organisations. This post describes a recent request for assistance, the steps taken to learn more, the conclusions reached, and where this leads us next. The TIFF format and lossless compression The TIFF image format […]
By kdavies, posted in kdavies's Blog
Flashback is a proof of concept project run by the British Library’s Digital Preservation Team. The project is examining specific emulation and migration solutions as methods for preserving digital content held on CD, DVD , 3.5” and 5.25” disks. These mainly came to the British Library as supplements to print publications, most commonly with magazines […]
By ehalvarsson, posted in ehalvarsson's Blog
This is the second blog inspired by my visit to colleagues at National Library of Australia, last August. The first, discusses a federated approach to better incorporating custom signatures into the PRONOM signature base without modifying PRONOM. The essence of the blog, however, still centers around how the community can create signatures for itself, and […]
Abstract: Downloading an object over the internet through a standard web-browser is a mechanism that is ‘less-than-optimal’ for the delivery of archival objects. Download of objects will not preserve the file-system metadata of the object. Tools like Wget can do this, but do we want the same behavior of the browser? On answering that, do […]