Given the number of people who hate unauthorized autoplaying video (including silent video), it’s sort of amazing that Chrome’s product management team hasn’t added a way to prevent it - at least as a buried config flag and ideally as domain rules (like the “Clear cookies on exit” rules). That wouldn’t preclude using automated heuristics to add and remove sites from the filters, but at least there’d be a reliable way to turn it off and whitelist a few domains.
Background from https://news.ycombinator.com/item?id=16367457#16370471:
“Alas, this flag only prevents video that has sound from auto-playing. It’s the inadequate option that my earlier comment was referring to.
Here’s more: https://www.chromium.org/audio-video/autoplay
https://developers.google.com/web/updates/2017/09/autoplay-p...
Quoting the blog post, Google’s decision that ”Muted autoplay is always allowed” is the problem. If any other Chrome users wondered why videos now auto-play without sound (even with this option set), at least based on the relatively minimal docs about this flag, this is why.