Re: region code in cdrecord

From: David Gilbert (dgilbert_at_dclg.ca)
Date: 04/25/05

  • Next message: Marc Olzheim: "Re: preadv() / pwritev()" 
    Date: Mon, 25 Apr 2005 12:03:42 -0400
To: Tim Kientzle <tim@kientzle.com>

    >>>>> "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.

    Dave. 

    -- 
============================================================================
|David Gilbert, Independent Contractor.       | Two things can only be     |
|Mail:       dave@daveg.ca                    |  equal if and only if they |
|http://daveg.ca                              |   are precisely opposite.  |
=========================================================GLO================
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