<video> or <audio> elements must not play automatically
Moderateno-autoplay-audio
What it checks
Ensure <video> or <audio> elements do not autoplay audio for more than 3 seconds without a control mechanism to stop or mute the audio
How to fix it
Review and fix this accessibility issue following WCAG guidelines
WCAG
Success criteria 1.4.2. See the WCAG 2.2 quick reference.
More detail: Deque University's page on this rule.