1. iHDTV - Uncompressed High Definition Television Over IP iHDTV - Uncompressed High Definition Television Over IP David 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.asphttp://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…