Why Autoplay Video Needs a Pause Control, Not Just Good Intentions

The correct answer is "It's inoperable and disorienting for users relying on audio cues from assistive tech, with no way to stop it."

Autoplay video or audio with no pause control is inoperable and disorienting for users relying on audio cues from a screen reader — the video plays regardless of what else is happening on the page, and there's no keyboard-reachable way to stop it — a common, citable Operable-principle violation. The fix is a visible, keyboard-reachable pause/stop control, off by default where possible.

Muting the video by default doesn't resolve the underlying problem — the requirement is about giving users control, not just avoiding sound. It isn't only a mobile-data-usage concern, though that's a real side effect; the accessibility failure is about operability. It also isn't limited to videos over some specific length — the pause-control requirement applies regardless of duration.