VoRTeC: Taming Foundation Flow for One-step Real time Video Compression

arXiv:2609.02291v1 Announce Type: cross Abstract: Ultra-low bitrate video compression still faces critical challenges: traditional neural video compression inevitably introduces blurring artifacts, while diffusion-based generative video compression suffers from excessive decoding latency and poor temporal consistency. To address these issues, we propose mathtt{VoRTeC}, a Video Compression framework built upon a foundational flow model (Wan2.1). By compactly encoding latent video representations, predicting the positions of compressed representations along flow trajectories, and integrating multi-scale priors, mathtt{VoRTeC} enables the compressor to harness generative video flow priors effectively. Without accessing the parameters or gradients of flow matching networks, our framework achieves one-step decoding and reconstructions with high perceptual fidelity. Meanwhile, we maintain consistency across frame groups via tail-frame reuse and prior caching. Extensive experiments demonstrate that our method reduces bit consumption by 58% compared to prior diffusion-based approaches, with decoding speed boosted by 3 to 197 times: mathtt{VoRTeC} achieves a decoding speed of 13 FPS at 720p and 32 FPS at 480p.

Related

• GVCC: Zero-Shot Video Compression via Codebook-Driven Stochastic Rectified Flow
• One-Forcing: Towards Stable One-Step Autoregressive Video Generation
• Head Forcing: Long Autoregressive Video Generation via Head Heterogeneity

Source: arXiv cs.AI | 2026-09-03