Last time I checked the Blue book it didn't mention bitrates: http://www.dvb.org/technology/standards/a122r1.tm3980r7.DVB-T2.pdf
And the last time I saw the chairman of the DVB-T2 technical module speaking he mentioned 36 Mbps: 2009/9/18 Brian Butterworth <briant...@freeview.tv> > Wikipedia is wrong (that's a suprise). The carrying capacity is 30Mbps, > according to the specification. > > 2009/9/18 Simon Thompson <st...@zepler.net> > > 30 Mbps is a bit of a low estimate for T2. >> >> Wikipedia suggests at least 35. >> >> 2009/9/18 Brian Butterworth <briant...@freeview.tv> >> >> Briefly, DVB-T2 uses MPEG4 delivered in a 30Mbps (compare 18Mbps and >>> 24Mps) multiplex using 256QAM (compared with 16QAM and 64QAM) with LDPC/BCH >>> error correction (not FEC) and 32k carriers (compare 2k and 8k). >>> http://www.ukfree.tv/fullstory.php?storyid=1107051377 >>> >>> Basically, this is not a software upgrade! >>> >>> 2009/9/17 Brendan Quinn <brendan.qu...@bbc.co.uk> >>> >>> Alan wrote: >>>> > I assume my topfield HD will be out of date with these proposed >>>> > changes? >>>> >>>> Ant replied: >>>> > You'll need to retune, but the services you currently get on Freeview >>>> > should still be available. Think of Freeview + as an optional >>>> > upgrade. >>>> >>>> To which Alun wrote: >>>> > I meant in terms of the HD element if they are changing the spec? If >>>> there is a >>>> > decryption requirement I doubt the Topfield will have it? >>>> >>>> I would say you're right, your box wont' receive HD freeview signals. >>>> But that's not (only) because of any encryption, it's because the spec >>>> for encoding HD over freeview [1] was only agreed last week and the >>>> first box was announced five days ago, to be released "in the first half >>>> of 2010": >>>> >>>> http://www.broadbandtvnews.com/2009/09/12/pace-unveils-dvb-t2-freeview-h >>>> d-box/<http://www.broadbandtvnews.com/2009/09/12/pace-unveils-dvb-t2-freeview-h%0Ad-box/> >>>> >>>> I guess you have this box [2]: >>>> >>>> http://www.topfield.co.uk/index.php?option=com_content&view=article&id=1 >>>> 0&catid=2&Itemid=3<http://www.topfield.co.uk/index.php?option=com_content&view=article&id=1%0A0&catid=2&Itemid=3> >>>> >>>> It uses "HDMI upscaling" to work with your HD TV. But it's not actually >>>> processing the real freeview HD signal and never can -- your box needs >>>> different chips to be able to do that. So to actually see Freeview HD in >>>> HD, you will need to buy a new box :-( >>>> >>>> HTH, >>>> >>>> Brendan. >>>> [1] known as DVB-T2. The DVB are the standards committee for most TV >>>> standards in Europe, India, Australia etc. The BBC is a member. DVB-T >>>> was the standard for regular freeview, so DVB-T2 is the standard for >>>> next-gen freeview: the "T" is for terrestrial. You can guess that DVB-C >>>> is for cable and DVB-S is for satellite... They also have C2 and S2 >>>> standards for HD over those platforms. >>>> [2] URL edited for brevity -- yes it was much longer than that before -- >>>> but it seems to work... >>>> >>>> - >>>> Sent via the backstage.bbc.co.uk discussion group. To unsubscribe, >>>> please visit >>>> http://backstage.bbc.co.uk/archives/2005/01/mailing_list.html. >>>> Unofficial list archive: >>>> http://www.mail-archive.com/backstage@lists.bbc.co.uk/ >>>> >>> >>> >>> >>> -- >>> >>> Brian Butterworth >>> >>> follow me on twitter: http://twitter.com/briantist >>> web: http://www.ukfree.tv - independent digital television and >>> switchover advice, since 2002 >>> >> >> >> >> -- >> Simon Thompson >> GMAIL Account >> > > > > -- > > Brian Butterworth > > follow me on twitter: http://twitter.com/briantist > web: http://www.ukfree.tv - independent digital television and switchover > advice, since 2002 > -- Simon Thompson GMAIL Account
