The third scene reads wrong. Fix just that scene. The other 23 keep their voiceover, footage, captions and timing. Then render the video once, with your edits.
What it is
Every scene is its own block in the editor. Pick fresh footage for scene 3, search for a better clip, or use your own image. Edit its narration in the captions and re-voice only that scene. The change shows in the preview, and you can undo it or try 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 open that scene in the Media panel, search for "1944 Normandy" and swap in an archive clip. The rest of the video is untouched.