SIA-R24<video> element visual content has transcript

Accessibility requirements

This rule tests conformance of the following accessibility requirements:

Description

This rule checks that prerecorded <video> elements have all audio and visual information available in a transcript.

Applicability

This rule applies to every prerecorded <video> element that is visible where the video contains audio.

Expectations

  1. A text transcript containing all the visual and auditory information of the test target is available, either on the page or available through a link.

A "text transcript" in the context of this rule is defined in WCAG 2 as an alternative for time based media.

Assumptions

This rule makes the following assumptions:

  • A mechanism is available to start the video and the video element is not simply used to display the poster.

  • The language of each test target can be correctly determined, either programmatically or by analyzing the content, and sufficiently understood.

Accessibility support

This rule has no known accessibility support concerns.

Examples

Acknowledgments

This document includes material copied from or derived from https://act-rules.github.io/rules/1a02b0/. Copyright © 2021 W3C® (MIT, ERCIM, Keio, Beihang).