----- Original Message ----- > From: "Brandon Butterworth" <[email protected]>
> > On the financial side, it is trivial. > > The opposite, the bits were paid for but unused back then so > financially it was worth using them. In digital tv every bit has a use > and so a cost, hence they are used for more TV channels instead for > parasitic services. You end up competing with TV if you want any > quantity so hard to make viable today. > > > On the engineering side, _impossible_. > > The opposite, completely trivial now. Digital TV is a mux of a number > of bit streams, some with compressed video others with meta data for > epg, alternate sound, interactive apps etc. Adding another stream to > the mux is trivial, you just have to pay for the bandwidth though as > most are stat muxed it's possible to create room at the expense of the > vbr streams where the video encoders reduce the quality of as result > of back pressure from the stat muxer And sanction means both "approve of" and "order the death of" and academic means both "very important learning-related" and "doesn't matter". His assertion, Brandon, had to do with *whether you can still slip it in without anyone noticing and having to do anything at any other stage of the transmission chain*, which was Stargate's Unique Selling Proposition. Yes, we know that its possible to move bits down a digital distribution channel, Captain Obvious. :-) Cheers, - jra -- Jay R. Ashworth Baylink [email protected] Designer The Things I Think RFC 2100 Ashworth & Associates http://baylink.pitas.com 2000 Land Rover DII St Petersburg FL USA http://photo.imageinc.us +1 727 647 1274
