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Originally Posted by robert53 On my pict. of Nero InfoTool BenQ 160 Firmware B7U9..lbottom DVD features shows;
Region Control II RPCII Changes Left user: 4 CSS with check box X
Region Code 1 Vendor 4 CPRM ...................unchecked?
On my Liteon Drive and also my Sony drive, they are checked off with an X..
Please explain why not on my BenQ? |
//OFF TOPIC//
CPRM (Content Protection for Recordable Media ) is a mechanism that ties a recording to the media on which it is recorded. It is supported by some DVD recorders, but not by many DVD players. Each blank recordable DVD has a unique 64-bit media ID etched in the BCA. When protected content is recorded onto the disc, it can be encrypted with a 56-bit C2 (Cryptomeria) cipher derived from the media ID. During playback, the ID is read from the BCA and used to generate a key to decrypt the contents of the disc. If the contents of the disc are copied to other media, the ID will be absent or wrong and the data will not be decryptable.
Quoted from DVDDeMystified