Content & Construction: EgoGears evaluates whether local video understanding transfers across encounters in outdoor settings. It uses human-collected egocentric videos of walking, jogging, and running along repeated traversals to test evidence binding, correspondence, and spatiotemporal composition.
Scoring & Findings: The benchmark assesses 29 single-video and 31 multi-video MLLM configurations across six model families. Results show a significant performance drop (mean decrease of 22.5 percentage points) on multi-video questions compared to single-video ones, highlighting bottlenecks in observation-evidence binding and route-state tracking.