Actually, Markus Hess already gave such a talk this year (in German, no closed captions but lots of AI-generated illustrations):

https://media.ccc.de/v/ho26-124-vom-hacker-zum-spion-die-ges...

How cool, thanks for sharing!

Now off to find the easiest way to translate the video.

whisper to the rescue - https://gist.github.com/mdp/68cd55abd73cd5dd569f62c96eb3fa83

You can burn this on top of the video with `ffmpeg -i video.mp4 -vf subtitles=video.srt -c:a copy video_subtitled.mp4`