Seedance 1.5 Pro Fast (Image-to-Video) generates cinematic, live-action–leaning clips from a text prompt plus a first-frame image, preserving the image's subject and composition while adding expressive motion and stable aesthetics. It supports 4–12s duration control, adaptive aspect ratio that follows the input image, and reproducible outputs via seeds—ideal for ad creatives and short-drama shots that need a strong visual anchor.