OptionalAudioMJ: Files ID of the synthesized TTS clip uploaded by Pre-Production.
VideoBeat.Key that this narration line drives.
OptionalDurationMeasured clip duration in seconds used to fit the beat's length.
Unique narration line identifier (referenced by VideoBeat.NarrationKey).
OptionalStagedRelative bundle path of the staged audio clip during rendering.
OptionalStartResolved start time in seconds on the master timeline after synthesis.
Spoken script text for this beat.
OptionalWordOptional word-level alignment timings driving captions and audio cues.
Single spoken narration line synthesized for a specific beat (§8).