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iHDTV: Uncompressed HD Television Over IP

Discover the benefits of uncompressed high-definition television over IP, including clearer picture, wider screen, and low delay for more natural conversations. Learn how to set up your network and equipment to enjoy iHDTV.

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iHDTV: Uncompressed HD Television Over IP

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  1. iHDTV - Uncompressed High Definition Television Over IPDavid Devereaux-Weber, P.E

  2. Why HD? • Clearer Picture • Wider screen • Much more detail at same zoom • For example, HD shot of this event can include speaker and screen, and the text on the screen can be read

  3. Why Uncompressed? • Very low delay • More natural conversations • Network testing aspect • High bandwidth – 1.5 Gbps / Channel • Video uses UDP, not TCP • TCP retransmits when necessary; if a video packet is lost, a retransmission would be too late • UDP really exposes network issues

  4. Why Uncompressed? • Its cool!

  5. How • Computers • Dual Xeon; PCI Express • Dual Gig Ethernet • HD Camera • Sony HVRZ1U <$5K • HD Video • Black Magic Decklink

  6. How • HD Video • AJA • Audio echo suppression • Polycom Vortex • Software • iHDTV • http://researchchannel.org/tech/ihdtv.asp

  7. Network • Each of dual Ethernets needs its own subnet • Otherwise they have the same default route and use same Ethernet • I use a Cisco 4948 switch with a 10 GE uplink • 9000 byte jumboframes for entire path

  8. Questions • dave@doit.wisc.edu • http://cable.doit.wisc.edu • Demo…

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