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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: [Nanog] ATT VP: Internet to hit capacity by 2010
Once upon a time, Steve Gibbard <[email protected]> said: > iTunes video, which looks perfectly acceptable on my old NTSC TV, is .75 > gigabytes per viewable hour. I think HDTV is somewhere around 8 megabits > per second (if I'm remembering correctly; I may be wrong about that), > which would translate to one megabyte per second, or 3.6 gigabytes per > hour. You're a little low. ATSC (the over-the-air digital broadcast format) is 19 megabits per second or 8.55 gigabytes per hour. My TiVo probably records 12-20 hours per day (I don't watch all that of course), often using two tuners (so up to 38 megabits per second). That's not all HD today of course, but the percentage that is HD is going up. 1.1 terabytes of ATSC-level HD would be a little over 4 hours a day. If you have a family with multiple TVs, that's easy to hit. That also assumes that we get 40-60 megabit connections (2-3 ATSC format channels) that can sustain that level of traffic to the household with widespread deployment in 2 years and that the "average" household hooks it up to their TVs. -- Chris Adams <[email protected]> Systems and Network Administrator - HiWAAY Internet Services I don't speak for anybody but myself - that's enough trouble. _______________________________________________ NANOG mailing list [email protected] http://mailman.nanog.org/mailman/listinfo/nanog
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