The New York Times: Packet8 phones also do not use the new H.264 video encoding and decoding scheme, which provides high-quality, 30-frames-a-second images with half the bandwidth requirements. In some ways, the new codec may mean to video what the MP3 compression format has meant to audio.

1 comment so far
9:49 AM PT
Apple also has some interesting stuff to say about H.264
(link)