Map what an audio description must add

Using [SCENE TRANSCRIPT] and [VISUAL BEATS], make an audio-description gap map. For each beat, mark what dialogue or sound already conveys, what essential visual fact remains, and any pause supplied; otherwise mark timing unknown. Draft concise description lines only for gaps, with timing marked provisional if exact media is unavailable. Do not narrate obvious sounds, invent expressions, or speak over critical dialogue. Check that each line changes what a listener can understand; if exact media timing is unavailable, mark pause fit for later playback testing rather than claiming it is verified.