Swap the world: the walking location swap

Start with the easiest Level 1 move: keep yourself exactly as you shot it and change everything around you. Here it is one handheld clip of a walk across a plaza, and the whole world behind the walk becomes a desert at sunset — on cue, the moment the fingers snap.

Claude reads your clip as frames

You drop the clip into Claude first — and Claude doesn't watch your video the way you do. It reads it as a set of frames, so it understands what is actually in the shot: you, your walk, the light, the handheld move. That full context is what lets Claude write the prompt that changes the world without losing you. Seedance is the generator that runs the finished prompt; Claude is what writes it.

The keep-list is the whole trick

Turn on the skill and it writes down everything that must stay exactly as shot — and locks it:

Then, and only then, the one change: on his snap, transform only the world around him into open desert. The skill even writes the exact second to flip it. The top of that keep-list is your anchor — your face, your walk, your hands — the real thing everything else hangs off; the list is just the anchor written down. Everything on it is protected; everything else is free to change.

Name the trigger, not just the look

The swap lands because it is tied to a moment in the performance — the finger snap around 2.2 seconds — not dropped in whenever. A backlit sun blooms into a white flare, and as the bloom falls off, the stone underfoot is rippled sand rolling to the horizon, lit by the same low sun so the light on the walk barely changes. Copy the full prompt from the player and run it on your own walking clip.

The old way, gone