Generate novel-view video that extends a real scene beyond the observed region. Observed frames are
depth-warped (DepthAnythingV2 + COLMAP poses) into target viewpoints → a control video with holes +
an inpaint mask → Wan2.1-VACE-14B generates the unobserved region.
observed frames → forward-splat warp into target poses → [control w/ holes | mask] → VACE-14B inpaints