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The development work on an imaging/ripping workflow for optical media is shaping up steadily, and you can expect a write-up with more information about our software and hardware setup here in the near future (you can get a sneak peek here). However, this blog is about a very specific problem that we ran into while […]

By johan, posted in johan's Blog

25th Apr 2017  2:07 PM  186 Reads  No comments

On April 11, 2017, the National Archives of the Netherlands (NANETH) and Het Utrechts Archief (HUA), held a workshop about the preservation tools PRONOM, DROID and JHOVE. Annelot Vijn (Application Manager Department of Archives at HUA) and I, Remco van Veenendaal (Preservation Advisor at NANETH), prepared the programme, and I led the workshop. Starting with […]

By RvanVeenendaal, posted in RvanVeenendaal's Blog

14th Apr 2017  12:13 PM  202 Reads  No comments

We were asked recently to write up a tactical fix for addressing “Tag out of sequence” errors in image files. It seems like the sort of thing that others might find useful, and so this blog is a record of that method. We are sharing it for comment and discussion. At the end of the […]

By jaygattuso, posted in jaygattuso's Blog

9th Apr 2017  11:53 PM  353 Reads  1 Comment

Organisations that use JHOVE for PDF validation will already be familiar with the number of error messages it reports. The recently released JHOVE v1.16 Release Candidate (RC) includes a couple of my bug fixes for the PDF module which appear to reduce this number significantly. These fixes were the result of investigating “Invalid Page Dictionary Object” errors and […]

By Peter May, posted in Peter May's Blog

10th Mar 2017  2:23 PM  779 Reads  No comments

Two weeks ago our archive interest group (AIG) held their first face to face meeting. We were kindly hosted by the Danish National Archives in Copenhagen. Currently the AIG comprises participants from our three national archive members in Denmark (Rigsarkivet) the Netherlands (Nationaal Archief), and Estonia (Rahvusarhiiv) (new members are welcome). The group has been […]

By Becky, posted in Becky's Blog

24th Feb 2017  9:45 AM  606 Reads  No comments

Many factors contribute to the long-term preservation of and access to digital collections. And typically, the endpoint for this material is a repository—or other type of preservation system. But what happens to content after it is stored? How do digital preservationists ensure that content is correct and valid when ingested as well as remains unchanged […]

By caylinsmith, posted in caylinsmith's Blog

23rd Jan 2017  12:57 PM  1076 Reads  1 Comment

  The research question I have never doubted the JHOVE TIFF module. The JHOVE TIFF module is always right. Everybody says so. That’s why nobody uses the myriad alternatives to it, although it’s so easy to write a TIFF validator, I could almost do it myself. But while my colleague Michelle and I are drafting […]

By Yvonne Tunnat, posted in Yvonne Tunnat's Blog

17th Jan 2017  8:40 AM  1726 Reads  4 Comments

In my previous blog post I addressed the detection of broken audio files in an automated workflow for ripping audio CDs. For (data) CD-ROMs and DVDs that are imaged to an ISO image, a similar problem exists: how can we be reasonably sure that the created image is complete? In this blog post I will […]

By johan, posted in johan's Blog

13th Jan 2017  3:30 PM  3589 Reads  5 Comments

At the KB we have a large collection of offline optical media. Most of these are CD-ROMs, but we also have a sizeable proportion of audio CDs. We’re currently in the process of designing a workflow for stabilising the contents of these materials using disk imaging. For audio CDs this involves ‘ripping’ the tracks to […]

By johan, posted in johan's Blog

4th Jan 2017  2:38 PM  977 Reads  3 Comments

As you might know, the PREFORMA project works on one of the main challenges memory institutions are facing nowadays: the long-term preservation of digital data. If your memory institution is working with or is helping to refine open source tools, please share your experiences via this survey. It should take about 20 minutes to complete, and […]

By MelanieImming, posted in MelanieImming's Blog

13th Dec 2016  12:38 PM  658 Reads  No comments