Rocket Validator integrates axe-core version 4.8 into an automated web site scanner.
Axe Core 4.8 rules tagged as Section 508.
track element with the property set to
kind="captions" is required for an HTML5
video element. For deaf viewers, the captions must include all audible cues from the video, such as dialogue, musical cues, sound effects, and other pertinent information.
Users who are hard of hearing have limited or no access to a video’s content if it lacks a caption. Even if there is a captioning track, make sure it includes all of the video’s important content and not just the dialogue.
Without captions, deaf viewers are able to see everything in the video but are unable to hear anything. The dialogue, narration, and other crucial sounds that are not spoken by people—such as “dramatic instrumental music,” clapping, screaming, or other sounds that create the scene, provide context, or otherwise give meaning to the video—are not audible to deaf viewers without a caption track.
What this Accessibility Rule Checks
Makes sure all
video elements have captions.
50,000 Accessibility and HTML checks per month. Fully automated.
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