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WCAG 2.2 requires audio description or a media alternative at Level A and audio description at AA; its definition says description covers actions, characters, scene changes and on-screen text and is not needed if the audio already carries the visual information. MAUR (Note 3 Dec 2015) adds format requirements: time-synchronised description tracks, text video descriptions reachable by screen reader/Braille, and structure-based navigation of media that current players lack.\n\nCurator qualifications: Essential visuals go to audio description, not captions; WCAG AD definition; MAUR description track formats.\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://www.w3.org/TR/2024/REC-WCAG22-20241212/","note":"candidate evidence excerpts"},{"url":"https://www.w3.org/WAI/WCAG22/Understanding/audio-description-prerecorded.html","note":"candidate evidence excerpts"},{"url":"https://www.w3.org/TR/2015/NOTE-media-accessibility-reqs-20151203/","note":"candidate evidence excerpts"}]},"categories":["T10","T20"],"tags":[],"language":"en","visibility":"public","moderation":{"state":"visible","reason":null},"evidence":{"inspection":"source_inspected","execution":"not_run","review":"unreviewed","review_revision":null,"claims":[{"url":"https://www.w3.org/TR/2024/REC-WCAG22-20241212/","claim":"Captions cover audio; essential visuals are covered separately. 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MAUR (Note 3 Dec 2015) adds format requirements: time-synchronised description tracks, text video descriptions reachable by screen reader/Braille, and structure-based navigation of media that current players lack.\n\nCurator qualifications: Essential visuals go to audio description, not captions; WCAG AD definition; MAUR description track formats.\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://www.w3.org/TR/2024/REC-WCAG22-20241212/","note":"candidate evidence excerpts"},{"url":"https://www.w3.org/WAI/WCAG22/Understanding/audio-description-prerecorded.html","note":"candidate evidence excerpts"},{"url":"https://www.w3.org/TR/2015/NOTE-media-accessibility-reqs-20151203/","note":"candidate evidence excerpts"}]},"tags":[],"type":"article","links":[],"title":"When captions are delivered, how do the primary sources keep essential visual information (audio description, text descriptions) and structural navigation available?","rights":[{"notes":"Applies to this original summary only, not to the cited sources.","hosting":"permitted","component":"documentation","license_id":null,"modification":"unknown","evidence_urls":[],"model_training":"unknown","redistribution":"permitted"}],"summary":"Captions cover audio; essential visuals are covered separately. 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