We just published the jpylyzer 2 release candidate, which includes (among other things) support for raw codestream validation. More info here: https://openpreservation.org/news/jpylyzer-2-release-candidate-out-now/ #jpeg2000
Here's a weird and slightly spooky 1-minute trailer(!) I made for the upcoming jpylyzer 2.0.0 release (don't miss out on the audio on this one) https://youtu.be/gIutpFxGy28
Recovering '90s Data Tapes - Experiences From the KB Web Archaeology project https://www.bitsgalore.org/2019/09/09/recovering-90s-data-tapes-experiences-kb-web-archaeology Web-friendly version of the paper I wrote for the upcoming #iPres2019 conference in Amsterdam. Contains links to lots of tape-related resources
Now in blog form! "rsync, GUIs, power, control, design, and decisions" https://bits.ashleyblewer.com/blog/2019/06/29/rsync-guis-power-control-design-and-decisions/
Attention jpylyzer users - I'm considering some changes to jpylyzer's output format for an upcoming 2.0 release in November. See this note for details: https://gist.github.com/bitsgalore/300a295572606c17fa763335a255efaf If you have any comments or suggestions just let me know!
One for the floppy crowd - a simple disk imaging workflow tool (basically a simple graphical front-end around dd and ddrescue) https://www.bitsgalore.org/2019/04/10/a-simple-disk-imaging-workflow-tool
New bloggage - a simple workflow tool for imaging optical media using readom and ddrescue https://www.bitsgalore.org/2019/03/22/a-simple-workflow-tool-for-imaging-optical-media-using-readom-and-ddrescue
UPDATE: OPF call was this morning, and codestream validation in jpylyzer will happen! https://github.com/openpreserve/jpylyzer/issues/113 (already did a quick test last week which confirmed this is easy to implement)
An email I got yesterday about validating JPEG 2000-encoded video frames made me think about adding an option to jpylyzer for validating raw JPEG 2000 codestreams (through the Python API and the CLI). Is this something anyone would find useful? (Next week there'll be a call with OPF about the priorities for an upcoming jpylyzer release by the end of 2019, so if this is something people are interested let me know so I can try to push it up the priority list!)
Working on a lecture for next week inspired me to properly condense all my bookmarked emulation resources into one basket, and put the list out there for everyone.
If you've got favored blogs/papers/guides for emulation, please contribute and share!!
Following a couple of days of digging, dusting and editing, restored versions of all preservation-themed blogs I've written since 2010 are now available here https://www.bitsgalore.org/ Will probably use this as my main blogging platform from now on.
Wrote a new blog post on recovering ’90s data tapes, with links to full workflow descriptions (including hardware configuration), easy to use recovery software and tonnes of other tape-related resources http://openpreservation.org/blog/2019/01/31/roll-the-tape-recovering-90s-data-tapes-in-bitcurator/
Out now: new release of the tapeimgr tape extraction tool. Now with improved metadata support (incl entry of identifiers, descriptions and annotations through GUI or CLI). Default output dir is now configurable as well https://github.com/KBNLresearch/tapeimgr
Out now - tapeimgr 0.3.0 https://github.com/KBNLresearch/tapeimgr Main change is that it now runs without root access; see release notes for more details https://github.com/KBNLresearch/tapeimgr/releases/tag/0.3.0
Python-based tape extraction tool (GUI + CLI) is shaping up nicely (code will follow once I've sorted out some remaining details) ....
New bloggage - Crawling offline web content: the NL-menu case http://openpreservation.org/blog/2018/07/11/crawling-offline-web-content-the-nl-menu-case/
Last fall I wrote a bunch of Apache Tika mimetype patterns for detecting various versions of Lotus 1-2-3 and Quattro Pro spreadsheets. Almost forgot about this, then I just saw they're finally merged into Tika's master branch https://github.com/apache/tika/pull/209#event-1723687193
Digital preservation, file formats.
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