Live multimedia content must be captioned. Captions must be accurate, must include dialogue, the individual speaking, and any relevant audio information.
WCAG 2 criterion
1.2.4 Captions (Live) (Level AA)
Tools and requirements
Siteimprove helps for discovering video content (QA > Inventory)
Test procedure
Any multimedia content presented live must have caption support.
Captions are not required for silent live video.
The captions MUST be accurate to the audio.
The captions MUST denote a change of speaker.
AI Prompt
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Create a PHP class in the namespace "App\Services\AccessibilityAnalyzer\GuidelineRules"
that extends "App\Services\AccessibilityAnalyzer\GuidelineRuleRunner" and is called "Guideline12" that has a function with the signature "protected function findApplicableElements(Crawler $crawler): Crawler". The base class includes the function "protected function isElementIncludedInAccessibilityTree(\DOMNode $element): bool" for determining if an element is included in the accessibility tree.
Web accessibility guideline:
## Live multimedia content must be captioned. Captions must be accurate, must include dialogue, the individual speaking, and any relevant audio information.
### WCAG 2 criterion
1.2.4 Captions (Live) (Level AA)
### Tools and requirements
* Siteimprove helps for discovering video content (QA \> Inventory)
### Test procedure
Any multimedia content presented live must have caption support.
* Captions are not required for silent live video.
* The captions MUST be accurate to the audio.
* The captions MUST denote a change of speaker.
