HELP! * GREY=local LOCAL HTML version of Foils prepared December 2,95

Foil 5 Digital Video: Myths and Facts

From Video Server,Delivery and Compression Technologies SC95 Tutorial on Web Technologies -- December 4,95. by NPAC Team * See also color IMAGE
Playfield for extremists
  • Popular research approach: current hardware and software infrastructure inadequate for digital video or other continuous media. Packet networks and IP protocols not useful; need ATM AAL and radically new protocols to ensure quality of service, bandwidth provisioning, tight real-time protocols and scheduling.
  • Enthusiasts claim: Internet ready for digital video - let's go MBONE!
  • Telco's and CATV: take a disk farm or a bunch of real-time MPEG encoders and connect to hybrid fiber coax or ADSL.
Reality check:
  • ATM technology not ready, QOS not implemented, AAL1 protocol hardly available.
  • Internet certainly not ready for video unless 1 frame/s deemed useful. MBONE just a demo of IP multicast technology.
  • Telco's and CATV trials plagued by performance and scalability problems. VDT technology functional but server technology far behind.

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