One of Vernor Vinge's books has ultra-low-bandwidth videoconferences that are described in approximately the same way- the computer is passed the absolute minim

One of Vernor Vinge's books has ultra-low-bandwidth videoconferences that are described in approximately the same way- the computer is passed the absolute minimum of data to try and generate an image that sort of approximates the interlocutor, and when the bitrate gets too low it can end up straight-up hallucinating.