Is the video hosted anywhere else? It seems to be the only source of info, but it's being played at like 0.5X speed.
https://www.media.mit.edu/projects/alterego/overview/
check also the publications tab, and this pr:
https://docsend.com/view/dmda8mqzhcvqrkrk/d/fjr4nnmzf9jnjzgw