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arXiv · 2605.00874

Latent Space Probing for Adult Content Detection in Video Generative Models

Alizishaan Khatri·Chiquita Prabhu
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Abstract

The rapid proliferation of AI-powered video generation systems has introduced significant challenges in content moderation, particularly with respect to adult and sexually explicit material. Existing detection methods operate on either prompts or decoded pixel-space outputs. Therefore, both approaches are blind to the rich internal representations formed during generation. In this paper, we propose a novel latent space probing framework that intercepts the denoised latent representations produced by the CogVideoX video diffusion model during inference and attaches lightweight classifiers to perform real-time adult content detection. To support this work, we construct a large-scale binary dataset of 11039 ten-second video clips (5086 violating, 5953 non-violating) sourced from adult websites and YouTube respectively. We introduce two lightweight probing classifier architectures. We train and evaluate it on the dataset. Our work demonstrates that latent-space signals encode strong discriminative features for harmful content detection, achieving 97.29% F1 on our held-out test set with an overhead in the 4-6ms range. Our results suggest that probing the latent space results in improvements in both detection performance as well as cost.

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BibTeXRIS

Alizishaan Khatri, Chiquita Prabhu. 2026-04-25. Latent Space Probing for Adult Content Detection in Video Generative Models. https://doi.org/10.1109/dsn-w70714.2026.00039

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