Once again, I managed to do the merest modicum of programming, the first and the easiest of three programming challenges with a £5000 prize. But from 1982, so no chance of collecting on that, even if I managed all three.
Something new to me: improved video compression by separating film grain parameters, compressing the grain-free video, and having the decompressor add synthetic grain with the right parameters. Film Grain Synthesis for AV1 Video Codec (10 page PDF, researchers from Netflix and Google.)
(via a comment on a thread about storing data by uploading as YouTube videos)