SIA-R50<audio> or <video> avoids automatically playing audio

Accessibility requirements

This rule tests conformance of the following accessibility requirements:


This rule checks that audio or video that plays automatically does not have audio that lasts for more than 3 seconds or has an audio control mechanism to stop or mute it.


This rule applies to every <audio> or <video> element that has:

  • an autoplay attribute with a value of true, and
  • a muted attribute with a value of false, and
  • a paused attribute with a value of false, and
  • a media resource with a duration of more than 3 seconds that contains audio.


  1. For each test target, the outcome of at least one of the following rules is passed:


This rule makes no assumptions.

Accessibility support

The native video and audio controls in several browser and assistive technology combinations are not keyboard accessible and the video or <audio> element itself may not be announced. Authors are recommended to use custom controls for keyboard navigation and cross browser accessibility support in general.



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