- Stream control protocol (RTSP)
- web-based protocol for VCR-style control
- allows recording, remote digital editing
- inherit HTTP security, billing, content labeling, ...
- distributed servers
- to be standardized within IETF
- Large groups
- currently, Mbone for conferencing (< 500)
- support 10,000 to millions: "Internet CATV"
- new algorithms for scaling QOS feedback
- RTP library for rapid application development
