Poster

PriVi: Towards a General-Purpose Video Model for Primate Behavior in the Wild

Felix B. Mueller ⋅ Jan F. Meier ⋅ Timo Lüddecke ⋅ Richard Vogg ⋅ Roger L. Freixanet ⋅ Valentin Hassler ⋅ Tiffany Bosshard ⋅ Elif Karakoc ⋅ William O'Hearn ⋅ Sofia M. Pereira ⋅ Sandro Sehner ⋅ Kaja Wierucka ⋅ Judith Burkart ⋅ Claudia Fichtel ⋅ Julia Fischer ⋅ Alexander Gail ⋅ Catherine Hobaiter ⋅ Julia Ostner ⋅ Liran Samuni ⋅ Oliver Schülke ⋅ Neda Shahidi ⋅ Erin G. Wessling ⋅ Alexander S. Ecker

Abstract

Non-human primates are our closest living relatives, and analyzing their behavior is central to research in cognition, evolution, and conservation. Computer vision could greatly aid this research, but existing methods often rely on human-centric pretrained models and focus on single datasets, which limits generalization. We address this limitation by shifting from a model-centric to a data-centric approach and introduce PriVi, a large-scale primate-centric video pretraining dataset. PriVi contains 424 hours of curated video, combining 174 hours from behavioral research across 11 settings with 250 hours of diverse web-sourced footage, assembled through a scalable data curation pipeline. We continue pretraining V-JEPA on PriVi to learn primate-specific representations and evaluate it using a lightweight frozen classifier. Across four benchmark datasets — ChimpACT, PanAf500, BaboonLand, and ChimpBehave — our approach consistently outperforms prior work, including fully finetuned baselines, and scales favorably with fewer labels. These results demonstrate that primate-centric pretraining substantially improves data efficiency and generalization, making it a promising approach for low-label applications. Code, models, and the majority of the dataset will be made available.