METHOD

## 01. Motion starts before frame one Problem. Video models default to an ease-in. The first 8–12 frames are near-static before movement begins. In a 3-second shot that's a third of the clip spent doing nothing, and it reads as an AI artifact immediately. Why the obvious fix fails. Adding "fast" or "dynamic" doesn't remove the ramp — it only raises the ceiling of the motion that follows it. Rule. State the initial condition, not the action: already moving at full speed from the very first frame. The model has to resolve frame one as mid-motion, so there is no ramp to build. Applied in. Porsche LIQUID · 2070 ##02. Negatives don't generalise Problem. A negative prompt suppresses the token you wrote, not the category it belongs to. Excluding fog leaves mist, haze, smoke and atmospheric bloom fully available to the model. Why the obvious fix fails. Broadening to atmospheric effects is worse, not better — it's too abstract to bind to anything, and the model ignores it. Rule. Enumerate every variant explicitly. Negatives are a list, never a concept. Applied in. Porsche LIQUID ##03. Materials respond to verbs, not adjectives Problem. Reflections described as properties come out flat. Glossy, reflective, mirror-like produce a surface that looks painted rather than one that is reflecting something. Why the obvious fix fails. Adjectives describe the result. The model needs the cause — what the light is doing, and to what. Rule. Describe reflection as a physical action: light travelling across the panel, the horizon dragging along the curve, highlights breaking at the edge. Same for every material: describe the event, not the finish. Applied in. Porsche LIQUID · Robotics ##04. Consistency is a constraint problem, not a reference problem Problem. A character has to survive eleven omnidirectional shots. Reference images hold the face and lose everything else — proportion, wardrobe weight, silhouette from behind, how the material falls at 180°. Why the obvious fix fails. More references narrow the model toward the angles you already have. The angles you don't have are exactly the ones that break. Rule. Lock the invariants in language before generating anything: silhouette, proportion, material behaviour, palette. The reference carries identity; the written constraints carry everything the reference can't see. Applied in. SAKH