[linux-dvb] Re: New 'scan/dvb-t/au-canberra-woden' + channels.conf (xine).

[Jamie Honan <jhonan@optusnet.com.au>]

On Sun, Nov 30, 2003 at 08:27:21PM +1100, Paul W wrote:
> (noobie post, based on 
> digital-tv/DVB/apps/scan/README:
> If you make a new one feel free to submit it to the linux-dvb mailing
> list http://linuxtv.org/mailinglists.xml.
> )
> 
> After a bit of digging around, I've found a working config for DVB-T in
> Australia/Canberra/Woden (using a Nebula DigiTv PCI card) uses
> dvb-kernel from CVS (2003-11-29).

Thanks, but there are several problems with an approach
based on making a table for every city and town in the world.

The list would be rather large, for one, and bound to be not up to date.

The problem is also that the values you have detected are not
'static, fixed in stone, forever'. In Australia broadcasters are free to change
their program line-ups, and are also free to to change
the various QAM, transmission mode (2K/8K) guard intervals etc.

What's needed for Australia (well, everywhere really) is a system where 
you specify the basic params and a list of possible frequencies. 
Something like this

tune_possibilities Australia {
        type = "TV";
        inversion = OFF;
        modulation = AUTO;
        LPfec_rate = AUTO;
        HPfec_rate = AUTO;
        trans_mode = AUTO;
        guard_interval = AUTO;
        hierarchy = AUTO;
        offsets = 0,-125000,125000 ;
        bandwidth = "7Mhz";
        frequencies = 177500, 184500, 191500, 198500, 212500, 219500,
226500, 529500, 536500, 543500, 550500, 557500, 564500, 571500, 578500,
585500, 592500, 599500, 606500, 613500, 620500, 627500, 634500, 641500,
648500, 655500, 662500, 669500, 676500, 683500, 690500, 697500, 704500,
711500, 718500, 725500, 732500, 739500, 746500, 753500, 760500, 767500,
774500, 781500, 788500, 795500, 802500, 809500, 816500;
}

I'm working on something now, and will hopefully have something
sensible in due course.

Jamie


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