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arXiv · 2608.30704

TUE-Detector: A Tool-Using Expert MLLM-Based Detector for AI-Generated Videos

Yichen Wu·Haoxuan Qu·Yongxing Dai·Yan Bai·Yihang Lou·Yuqi Lin·Hossein Rahmani·Jun Liu
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Abstract

AI-generated video detection, which aims to distinguish AI-generated videos from real ones, has recently received increasing research attention. To perform this task reliably, a key challenge lies in accurately identifying subtle-yet-measurable unnatural artifacts. In this work, we address this challenge from a novel perspective of tool-mediated evidence discovery and propose Tool-Using Expert MLLM-based AI-generated Video Detector (TUE-Detector), a novel framework for AI-generated video detection. TUE-Detector trains a general MLLM into a task-tailored tool-using expert detector that learns to invoke suitable tools, collect concrete evidence of unnaturalness, and reason over the evidence for reliable detection. Meanwhile, TUE-Detector further introduces novel designs to equip the expert detector with high-quality and suitable tools. Extensive experiments demonstrate the effectiveness of our framework.

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Yichen Wu, Haoxuan Qu, Yongxing Dai, Yan Bai, Yihang Lou, Yuqi Lin, Hossein Rahmani, Jun Liu. 2026-08-31. TUE-Detector: A Tool-Using Expert MLLM-Based Detector for AI-Generated Videos. https://arxiv.org/abs/2608.30704

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