WCAG Success Criteriawcag-2.2-A
WCAG 1.2.1: Audio-only and Video-only (Prerecorded)
WCAG 1.2.1 requires that prerecorded audio-only and video-only content have a text-based or media alternative so users who cannot hear or see the media can still access the information. This is a Level A requirement, meaning it is the minimum baseline for web accessibility compliance.