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Date:      Tue, 26 Apr 2005 23:32:12 +0000
From:      Chuck Robey <chuckr@chuckr.org>
To:        David Gilbert <dgilbert@dclg.ca>
Cc:        =?ISO-8859-1?Q?Dag-Erling_Sm=F8rgr?= =?ISO-8859-1?Q?av?= <des@des.no>
Subject:   Re: region code in cdrecord
Message-ID:  <426ECF7C.8060003@chuckr.org>
In-Reply-To: <17005.5342.260402.241779@canoe.dclg.ca>
References:  <426AC21B.2080205@chuckr.org>	<426AE866.7050008@chuckr.org> <86wtqs9yiw.fsf@xps.des.no>	<426BD1F6.7050201@freebsd.org> <86r7h08464.fsf@xps.des.no>	<426BDE1F.3020004@kientzle.com> <17005.5342.260402.241779@canoe.dclg.ca>

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David Gilbert wrote:
>>>>>>"Tim" == Tim Kientzle <tim@kientzle.com> writes:
> 
> 
> Tim> I wouldn't "rather", but I think it might be simpler.  I also
> Tim> seem to recall hearing about discs whose region-coding was done
> Tim> in such a way that they would not play on unlocked players.
> 
> Well (to put that to rest), there are two types of region coding in
> use on DVDs.  The first is the one we're talking about here ... which
> is a code in the files that tells the DVD player which region the disk
> is.  Early "unlocked" players were simply patched to accept any
> region.
> 
> The second type is code in the menu system that queries the region
> code and then acts on it.  Early players returned '0' for this
> function ... and the disks were coded to not play.
> 
> The fix for this was players that you could change the region on
> ... and "unlocked" players of this type allow you to set the region an
> unlimited number of times.  "locked" players usually let you set the
> region some small number of times.
> 

It turns out I was wrong ... even though the k3b stuff I read said it 
was using cdrdao, a bit more investigation proved it was using mkisofs 
and growisofs instead.  The both have large man pages, but nothing in 
them regarding the setting of region codes.

I really don't want to have to replace my existing dvd players, that is 
dumb, then I have a nice programmable system here.

> Dave.
> 



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