Media services consist of photo, audio, and video. They can be unidirectional in that the media is served from a server to a client, or just recorded to a server. Or they can be bidirectional were two or more end users simulations share audio or video, which is essentially a phone call.
ShofarNexus provides standard media services such as video streaming. However, with Matryoshka, no third party can know the viewing or downloading is ever taking place.