Q&A

Q.Why are the primary Transport layer protocols ill-suited for streaming?
A.UDP is fast but unreliable, and TCP is reliable, but the controls used to ensure delivery make it slow and prone to retransmission.
Q.What is the purpose of RTP’s two sister protocols, RTCP and RTSP?
A.While RTP provides the streaming, RTCP monitors and reports on quality of service. RTSP is used for control commands to start or stop the stream.
Q.Why does YouTube convert the videos submitted to Flash format?
A.Flash is an efficient and reliable video format, and the Flash player is readily available.

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