Tom Barry wrote: > Will ATSC M/H even have enough throughput for a single > decent 720p stream after error correction? That's a bit like asking whether ATSC can handle H.264. Lots of people swore it couldn't, but they were wrong. Standards can always be amended, and adding H.264 was a fairly obvious possibility right from the start. One possibility here is if M/H can be used without the extra FEC. Just for its extra training or for use with SFN towers, as A-VSB allowed. If it can be made to do that, and you dedicate the entire channel to M/H, then in principle you should be able to support HDTV without any trouble. Another possibility is if you dedicate the entire channel to M/H and use 1/2 rate FEC. IN PRINCIPLE, that gives you approximately 9 Mb/s capacity, which IN PRINCIPLE is enough for 720 at 24p, even with MPEG-2 compression. I'll bet the standard will artifically limit how much of the channel can use M/H, just like E-VSB does. That's just penmanship, though. It would be inconceivable for receivers to police that rule, if there were such a rule. So all it would take is someone to amend a paragraph or so, and that's that. Bert _________________________________________________________________ Send e-mail faster without improving your typing skills. http://windowslive.com/Explore/hotmail?ocid=TXT_TAGLM_WL_hotmail_acq_speed_122008 ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line.