[MPlayer-users] dvd play problem (scrambled)

[Alexander Roalter]

Alexander Roalter wrote:
> 
> Could this also be related to setting the region code? Still is this 
> necessary? I never booted any RC-Aware software (or OS running it) on 
> this computer, it was linux from the get-go). I still have to play both 
> RC1 and RC2 (which I don't really assume is a problem once the region is 
> set, but someone might enlighten me here...)
> 
> To complete this message, the same occurs with both my DVD drives (where 
> one happens to be a DVD writer). Of course none of them have any region 
> set, so this might be a problem, but I'd still be interested in the 
> technical background as to why the RC has to be set in the first place.

ok, here's what I found out:
setting RC for the drive helps. If you own DVDs from different RCs, it 
also helps having more DVD drives, each one set to a different RC 
(though it is only needed for breaking these special DVDs. Once the key 
is stored in the cache, one may play it on any drive.

So I set one drive from Region 0 (mask 0xFF) to Region 2 (mask 0xFD), 
and the other drive to Region 1 (mask 0xFE).

And now the breaking of all keys works like a charm, no more waiting for 
a key to be decrypted...


Something more for my understanding: why is the region code of the DVD 
drive necessary in order to decrypt some of the discs?

cheers,
Alex