undecryptable DVD, is there??

[pegg]

I scratched a DVD and downloaded DVD Decrypter to get the still
readable data. I saw it has CSS written there and I had a movie
DVD that I remember has CSS decryption (whatever it means).
I put it in the drive and run the software and was surprised to find
it can read the entire disc.

So what's the point of the movie DVDs being copy protected
when one can use DVD Decrypter to read the entire disc
100%.

Is there other method of encryption so that the DVD can't be
read by any software?

Once upon a time, when VHS was the standard. There was
a method called Macrovision or something to copy protect it.
How come the present DVD movies don't use the same method of
Macrovision copy protection??

Pegg

[dodecahedron]

they do.

Macrovision is built into every DVD (commercial).

someone hacked the protection and it got out on the net.
programs like DVD Decrypter use the code that hacks the CSS protection.

[burninfool]

"Is there other method of encryption so that the DVD can't be
read by any software?"

Well Sony has included ARCCOS lately but that has been cracked too.DVD-AUDIO(CSS2) still has not been cracked and the next generation DVD(HD-DVD/Blu-Ray) will have a suite of encryption that will keep the hackers busy for years.

BTW...CSS=Content Scrambling System

[pegg]

I thought Macrovision uses random codes that can't be cracked.
I remember experts saying you can't disable Macrovision in VHS
because the signals have been integrated to the video much like
HIV being part of the immune system already and hard to dislodge.
But I read DVD Decrypter can really remove all Macrovision from
all DVDs. How did it manage to know the locations of the signal
in the frames?? Did they steal the decryption codes directly from
Macrovision or something?? Maybe the procedure can be used in
eliminating HIV from patients too.

Pegg

[redk9258]

I thought Macrovision uses random codes that can't be cracked.
I remember experts saying you can't disable Macrovision in VHS
because the signals have been integrated to the video much like
HIV being part of the immune system already and hard to dislodge.
But I read DVD Decrypter can really remove all Macrovision from
all DVDs. How did it manage to know the locations of the signal
in the frames?? Did they steal the decryption codes directly from
Macrovision or something?? Maybe the procedure can be used in
eliminating HIV from patients too.

Pegg

I believe on a DVD, macrovision is just a flag that enables your DVD player to produce a macrovision infested video signal. I think there are players out there that have been hacked to turn this off (APEX).

On a VHS / BETA tape, macrovision is in the actual video recording and messes with the Automatic Gain Control of the VCR you are trying to record with. There have been all kinds of boxes to remove this for sale over the years.