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iHDTV - Uncompressed High Definition Television Over IP David Devereaux-Weber, P.E

iHDTV - Uncompressed High Definition Television Over IP David Devereaux-Weber, P.E. 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. Why Uncompressed?.

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iHDTV - Uncompressed High Definition Television Over IP David Devereaux-Weber, P.E

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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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