Somewhere around Chrome 60, this extension stopped to work for YouTube videos: Disable HTML5 Autoplay – Chrome Web Store.
It’s [WayBack] unmaintained now as Google is supposed to work on an own disable-autoplay function, but this fails too:
- chrome://flags/#autoplay-policy
Autoplay policy: Mac, Windows, Linux, Chrome OS, AndroidPolicy used when deciding if audio or video is allowed to autoplay. #autoplay-policyUser gesture is required for cross-origin iframes.
Via: [WayBack] HTML5 Video: How to enable *non-muted* autoplay in Chrome for Android – Stack Overflow
More reading:
- [Archive.is] 715049 – Implement Unified Autoplay policy – chromium – Monorail
- [Archive.is] Unified Autoplay – Google Docs
- [Archive.is] [Discussion] Progress of disabling autoplay/autobuffering in Chrome · Issue #118 · Eloston/disable-html5-autoplay
–jeroen