NerdTV is still encoded in MPEG-4 and still uses an applet player, only the applet is now Open Source, not from IBM, and comes with the assistance of mediaframe.org.
NerdTV will be distributed under a Creative Commons license so if you like some of what you see, you can redistribute it or even edit your own non-commercial version.
so the real heavy lifting for NerdTV will be done through a network of distributed servers I've created as a kind of "poor man's Akamai."
What has changed about the show is just the episode length, which is now about an hour up from 20 or so minutes, and the bandwidth required, now 183 kilobits-per-second up from 128. Pilot after pilot showed that 20 minutes simply wasn't enough time while an hour feels about right. And the extra bandwidth was always needed for the 320-by-240 video window, only now it is finally cheap enough that I can afford it.
MPEG-4 encoder - Sorenson Squeeze 4.1
First company to announce a realtime H.264 encoder -072005
Stream Quicktime over the net
Quicktime Tools & Utils