Keep the person, the background and the movement. Change what they say.
Try it freeCreators fixing a line without a reshoot. Marketers swapping a product name across variants. Course authors updating a module without re-recording the whole video.
The free preview is capped at 8 seconds of audio. It works on clear, front-facing, single-speaker footage — not on crowds, animals or heavily obscured faces. It does not translate and does not generate voices.