OmniCompass: 820-Video Benchmark Evaluates 50 MLLMs on Omni-Modal Video Understanding

_akhaliq · x · 2026-10-17

PolyU VCLab released OmniCompass (HF Paper of the Day), a holistic benchmark for omni-modal video grounding and understanding: 820 videos, 2,460 instances, 1,800 human annotation hours. It spans OmniCompass-VL and OmniCompass-AV tracks, three tasks (temporal grounding, spatial grounding, QA), and paired text vs text+image target specifications. Evaluating 50 MLLMs shows open-source models still lag proprietary ones (widest in audio-visual), with precise spatiotemporal grounding and fine-grained perception remaining key weaknesses.

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