You could ask the author "wardfarnsworth at gmail.com". I have been in touch with him before about his chess website https://www.chesstactics.org based on his book "Predator at the Chess board". He was quite responsive.
32 karma · joined August 17, 2011
It is fast but, nowhere close to accurate or useful for this specific example. Could not find a way to force the plural form. Neither quotes nor plus worked.
Have you looked at this app for inspiration? I'm not affiliated, just a happy customer.
That discussion has links to books with similar stories. Enjoy.
[1] http://atomicparsley.sourceforge.net [2] https://gpac.wp.imt.fr/mp4box/
Terabytes are cheap, memories are not.
Perhaps could serve as inspiration for future work :)
edit: they = Amazon