# Nvidia and MIT release open weights for MiniMax H3-based 2K and 4K video upscaler

> Original title: 英伟达团队基于 MiniMax H3 开源视频增强方案，最高支持 4K 重生成

- Source: QbitAI
- Published: 2026-10-30T07:31:11.000Z
- Bad Influence: https://badinfluence.news/items/tzjr974x3n8hz14698a5mnn4m
- Original: https://www.qbitai.com/2026/10/506743.html

## Summary

Nvidia and MIT's Efficient-Large-Model team released the Open-H3-Regenerate-2K model weights on Hugging Face, with inference code in the NVlabs/Sana repository. The project builds on MiniMax H3 to regenerate low-resolution video drafts at 2560×1440 (2K), with native 3840×2160 (4K) support. On a single NVIDIA B200 GPU, the team reports a 5-second clip's processing time fell from 87.26 seconds to 22.45 seconds, about 3.9 times faster.