HD-dekoder for bredbåndet

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  1. #1
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    HD-dekoder for bredbåndet

    MatrixStream 1020HD STB er verdens første IPTV-dekoder som lover full oppløsning i sanntid.


    http://www.pcworld.no/index.cfm?fuse...C89A2594CCE95C

  2. #2
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    Det står ingenting om hvor bredt bredbånd man trenger for å få utnyttet 1080 signalene.. (Det står vel heller ikke om det er i/p?).

    Ellers er det en meget spennende sak.. Selv om jeg tipper vi har for smalt bredbånd her i landet ennå

  3. #3
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    Jeg kan garantere at det finnes bredt nok bredbånd, spørsmålet er bare hvor mange som har det :-)

    DVHS bruker vel 28mbit MPEG2 v/1080i. HDV bruker 25 mbit. Dette er veldig generøs båndbredde for MPEG2 HD. 10mbit er vel en begynnelse ved effektiv h264 og optimaliserte enkodere?

    ""Whether you get 50 per cent bit rate reductionwith MPEG-4 depends on the type of content," hesays. "Everyone talks about this 50 per cent figurebut a lot of it is just marketing noise. You will notget 50 per cent on day one, but maybe [reduce bitrates] down from 12 Mbps to 10 Mbps. If wepromise more, we are going to make life difficult for ourselves."

    "I would say that DVB-S2 and MPEG-4 togetherwill take HD down to 4-5Mbps," says Cohen, whoexpects this to be achieved by 2010. This wouldbring HD down to where MPEG-2 SD was untilquite recently, and the figure would prove quiteacceptable to operators given the expectation that the cost of bandwidth will fall further anywayduring the next five years"

    "Wrede urges network operators to be contentwith the efficiency improvements yielded byadvanced encoding, and not to risk sacrificingpicture quality by seeking ways of cuttingbandwidth further. "I advise our customers(providers of HD channels such as Euro1080) not to be too restrictive with bandwidth initiallywhen they start HDTV. The worst thing that couldhappen is that customers get the impression HDTV is not that good."



    http://66.249.93.104/search?q=cache:KX6tqUGMszkJ:www.cable-satellite.com/features/jan-feb05/csi-14.pdf+hd+bandwidth+dvb&hl=no&lr=lang_en|lang_no

    mvh
    Knut

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