Open-Source Video Delta Net Pushes Video Generation Faster Than Playback
Video Delta Net (VDN), an open-source project led by Haocheng Xi (haochengxiucb), released VDN-Minimax-H3 (VDN-H3), claiming the first open-source video generation that runs faster than playback with near-lossless quality — a 75–90x speedup over MiniMax H3, outperforming FastH3.
Confirmed
- Built on the MiniMax H3 backbone; official claims of 75–90x speedup and better results than FastH3
- Hybrid attention architecture: an efficient per-frame linear attention branch for speed plus another branch for quality, enabling near-lossless real-time text-to-video
- Measured: on 8x NVIDIA B200 with 8 denoising steps, an 11.23-second generation of a 14.4-second 768p video
- Available on the MiniMax H3 Hugging Face Space (announced by @realmrfakename on 09-05)
Why it matters
- Generation faster than playback makes real-time interactive video generation feasible in the open-source ecosystem
- Open weights plus an HF Space demo lower the barrier to reproduction and validation, pressuring closed-source video models
2026-09-03 ~ 2026-09-05 · 8 related posts
Primary sources
- Video Delta Net speeds up open video generation 75-90x: 14s video in 11s — xiuyu_l · 2026-09-03
- VideoDeltaNet open-sources hybrid attention that speeds up MiniMax H3 video generation up to 90x — realmrfakename · 2026-09-03
- [source] Video DeltaNet open-sources hybrid-attention VDN-H3, 14.4s video in 11.2s on 8 B200s — BigWideBaker · 2026-09-05
- [source] VideoDeltaNet H3, Claiming Up to 90x Speedup, Lands on Hugging Face — realmrfakename · 2026-09-05
4 near-duplicate retellings: xiuyu_l · anselm · cHHillee · AiCreatorCamp