[bm-rf]

Maybe you could use something like GPT 4 vision To include a text description of the image in the transcript

[samatman]

Filtering full-color images down to a halftone suitable for book publishing is a mature technology, setting up an ImageMagick pipeline to do so would not be among the hard parts of preparing a book like this. Picking the right still frame out of gifs and video is a bit trickier, but not by much.