Yet another application for ai (Is there an acronym for that?). Given a video, generate a nicely readable webpage with transcript and tastefully selected stills and short clips.
So many tantalizing possibilities for next-gen A/V blending text (toc, transcript, summary, elaboration, explanation, interaction) with massaged video (speed, excerpts, mashups, synthesis) and HID ("hmm, my viewer just frowned and shifted gaze to the text pane, so let's cut to a synthesized reprise of that last bit with the conceptual steps filled in a bit"). So much fun to be had, modulo patents.
I can read many times faster than listen, and more easily skim back if I realise I don't understand something.