Egocentric 4D Perception(Ego4D) is a Facebook Artificial Intelligence(AI) Research project dedicated to creating a dataset of egocentric or first-person videos. The purpose is to understand how people interact in society and use objects with the intention of application in AI. It is the largest dataset in the world that captures daily-life activities around the globe from a first person’s point of view. Facebook AI collaborated with 13 universities around the world that collected over 3600 hours of unscripted, in the wild videos from 9 countries using a variety of head-mounted cameras.