Hierarchical Masked 3D Diffusion Model for Video Outpainting
The Hierarchical Masked 3D Diffusion Model (M3DDM) introduces a masking‑based training strategy and cross‑attention with global video clips to achieve temporally consistent video outpainting, while a hybrid coarse‑to‑fine inference pipeline mitigates error accumulation, delivering state‑of‑the‑art results and deployment in Alibaba’s creative center.
