TCP vs UDP on video stream

Question

I just came home from my exam in network-programming, and one of the question they asked us was \"If you are going to stream video, would you use TCP or UDP? Give an

Answer 1

For video streaming bandwidth is likely the constraint on the system. Using multicast you can greatly reduce the amount of upstream bandwidth used. With UDP you can easily multicast your packets to all connected terminals. You could also use a reliable multicast protocol, one is called Pragmatic General Multicast (PGM), I don't know anything about it and I guess it isn't widespread in its use.