Even today's more advanced codecs require in the region of 8-10 Mbps to do a good job of HD - and if you don't do a good job then why bother? The delivery of AV clips on bbc.co.uk, for example, is currently streamed at around 250 kbps, reflecting the ability to reach a mass audience today. The speaker looks at how it is possible to bridge the gulf which needs to be addressed if the promise of IPTV is to be realised.