arXiv Computer Vision By Siyu Li, Jin Yang, Weiheng Liang

Mind the Rift: Cross-Scale Coupling Mismatch for AI-Generated Video Detection

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The paper introduces RIFT, a forensic framework for detecting AI-generated videos by exploiting a cross‑scale coupling mismatch between macro‑level temporal dynamics and micro‑level pixel residuals. RIFT comprises a macro stream that models expected temporal evolution, a micro stream that probes residual patterns, and a coupling divergence module that quantifies their conditional dependency. Experiments on VidProM and GenVidBench show near‑perfect F1‑scores and robust performance across different encoders.

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