Nope, not OnLive.  They have their own system which I could talk about rather at length if anyone wanted, but in short is really not very good (but is probably passable).  They split the frame into 16 rectangular slices and encode them in separate streams, each of which runs at a constant bitrate.  Updates to each block are staggered 1ms apart, for a total frame latency of about 16ms.<p>More problematic is their awful business model, which, given that it's thought up by the guy behind WebTV, is probably not very surprising.