The third scene reads wrong. Regenerate just that scene. The other 23 stay exactly as they were — voiceover, footage, captions, timing. No re-render of the whole video, no lost edits.
What it is
Every scene is independent. Click "regenerate" on scene 3 and the pipeline runs only scene 3 — new script line, new voice take, new footage matched to it. The result drops into the timeline in seconds. You can swap, accept, or regenerate again until it lands.
Why it matters
The "regenerate everything" model is how most AI video tools work, and it's why creators end up with one almost-right video and no good options. Per-scene regen turns a "this is broken" moment into a 30-second fix.
Who it's for
Anyone shipping long-form video where a single off scene is the difference between a publish and a rewrite.
What it looks like in practice
Common use: the AI picked a generic stock clip for "the eve of D-Day". You hit regenerate on that scene only; ten seconds later it's a 1944 archive clip with a tighter narration line.