What it is
One-step diffusion video super-resolution that can run spatially untiled 4K on a single 24GB RTX 4090, with hybrid sparse attention and reward-based distillation. Upscale videos with a one-step diffusion pipeline that supports untiled 4K inference, streaming long videos, and selectable sparse-attention backends through a CLI or Python API.
Key results
- Untiled 4K inference on a single 24GB RTX 4090
- Hybrid attention gives up to 2× DiT acceleration
- Cuts peak memory by 45% vs standard DiT attention
Shows that high-quality diffusion VSR can reach practical untiled 4K inference on a single consumer GPU.