One image sets the opening frame
Vidu Q4 starts from a first-frame image rather than a text-only brief. Choose a sharp picture with a clearly separated subject and enough room for the intended movement. The image establishes composition, lighting, clothing, and object placement; your prompt describes how that scene changes. A still photo is guidance, not a promise that every logo, face, or edge will remain identical. Avoid tiny lettering and clutter when exact details matter, and compare the completed clip with your original before using it.