Re: [xine-user] Problems playing special DVD

[Sven H. <hei...@id...>]

On Monday 12 January 2004 19:18, Michael Roitzsch wrote:
> Hi Sven,
>
> > > So these were actually two different editions of LotR-TT? That's
> > > weird. They should not have the same serial number.
> >
> > Well, just to be exact (sorry if this is a bit nit-picking, maybe
> > everybody understood it already, but this is the point of "equal" and
> > "the same" again ;-) ): Both where "LOTR-TT, Extended Edition, Disc
> > 1" - but just different discs. They have defenitely different keys,
> > but somehow it seems that they have got the same serial number. As
> > said before, I am going to test that again, hopefully until
> > end-of-week.
>
> How can two discs with the same content be encrypted with two different
> keys? I don't think any studio would do that, since it just increases
> the costs (you have to use two different stampers). Let me know the
> outcome when you get to check the other disc, this is quite
> interesting.

Ok, I verified this, and the answer is: some discs (same title, same editio=
n)=20
defenitely might have got the same serial number, but different keys. I=20
checked this with two different packages of "LOTR-TT, Extended Edition". I=
=20
just checked each of the both main movie DVDs, not the extra stuff. However=
,=20
if this happens once, it might happen again. I dont know wether this is a b=
ug=20
of the DVD manufacturer and if this is compliant to the DVD standard, howev=
er=20
for sure libdvd*** creates just one cache entry for all these DVDs and of=20
coure fails reading except for that one the cache entry was created for.
I already created a bug report and filed a patch which includes the (always=
=20
differet) disc key in the database entry name. Now it works, maybe this pat=
ch=20
or something similar will make it into the next libdvd*** version.

Regards, Sven Heithecker

=2D-=20
Gr=FC=DFe, Sven Heithecker