Hi #PRONOM folks, do you know if that resource https://www.nationalarchives.gov.uk/aboutapps/fileformat/pdf/pronom_4_info_model.pdf is still up to date, or if there is one that replaces it?

#digipres

Le registre de format de fichiers #PRONOM fait peau neuve - vous pouvez jeter un coup d'oeil à sa nouvelle mouture ici : https://pronom.nationalarchives.gov.uk/

(Mais la mue n'est pas encore terminée.)

Hacking the DROID Signature File for Characterization

Identification of a format can be approached from many angles. Often a magic

number will be used at the beginning of a file. This may be strengthened by the addition of similarly consistent bytes at the end of a file or indeed any part of the bitstream inbetween. Using the sample file format we created last week the magic number to identify it is specified

Now is the time for a shout-out to @exponentialdecay for his file format signature development utility (https://ffdev.info/) and the SPARQL endpoint to #PRONOM data (btw, I can't find the URL any more...!).

And also to @richardlehane for Siegfried + Roy, always incredibly useful tools.

#digipres

Shattering the eyeglass: Using Kaitai Structs to dissect the eyeglass’ contents

by @beet_keeper

In my post from 2012: Genesis of a File Format, I created a new file format – the Eyeglass file format. The format provides a mechanism to persist information about a patient’s eye health following a checkup at an opticians. Today in 2023 we can use the format to understand how to make use of Kaitai Structs for understanding file formats.

Given the disclaimer that I am not actually an optician and that the format is purely illustrative, let’s look at the eyeglass again below.

#code #coding #digipres #digitalLiteracy #digitalPreservation #fileFormat #fileFormatAnalysis #fileFormats #kaitai #pronom #yyyy