How should script edits invalidate narration, captions, and video?

How should script edits invalidate narration, captions, and video?

Editing a script changes the input to later stages. The application needs a dependency rule that distinguishes still-valid work from outdated output.

Record version relationships

Store which script version produced narration, which audio version produced caption timing, and which artifacts were assembled into a video. Keep prior outputs as historical results when useful, but label them accurately. Do not overwrite version references merely to make the interface look current.

Regenerate only what changed

A text correction generally requires new narration and caption alignment, followed by a new render. A caption-style change may require only a render when the timing and audio remain valid. Define these rules explicitly. Test editing after approval, while generation runs, and after completion. Late workers should not publish their old-version output as the result of the new revision.