I have had problems with CPRM. Well I didnt know there was any until the player gave me an error. But the disk worked just fine on the computer. So now I just use the RW disk for data rather than movies. The -R disks I use does not seem to have any of the authoring stuff in it.
Media Information
Disc Regions are 1,2,3,4,5,6,7,8
Media code/Manufacturer ID JVC_VictorW7
Format Type UDF 1.02
Volume Name minority report
Disc Type DVD-RW
Book Type DVD-RW
Manufacturer
Media ID JVC_VictorW7
Protection System CPRM
Region 1,2,3,4,5,6,7,8
Format Capacity 4.38 GB
Formatted No
Capacity 4.38 GB
Free Size 0.01 GB
Free Blocks 4464
Number of Layers 1
Linear Density 0.267 um/bit
Track Density 0.74 um/track
Maximum Read Speed 8.0x
Maximum Write Speed 2.0x
Current Write Speed 2.0x CLV
Write Speed Performance Descriptor 1 2.0x CLV
What is Content Protection for Recordable Media?
Sometimes analog or digital broadcasts (typically in Japan) are identified to allow only one copy to be made by a viewer and by using the Content Protection for Recordable Media (CPRM) system, such material can be encrypted and recorded once to a writable DVD disc. As it is currently marketed, CPRM is an option found only in some consumer electronics (CE) DVD recorders that write DVD-RW and DVD-RAM discs using the DVD Video Recording format (DVD-VR). This allows material specifically flagged “copy once” to be written to a single disc but prevents that disc from then being further duplicated. This is accomplished by binding the content to the particular disc through encryption employing, among other things, a code (media identifier) unique to each writable disc compliant with the CPRM system. This one-off code is inserted at the factory into the special Narrow Burst Cutting Area (NBCA) of a DVD-RW or Burst Cutting Area (BCA) of a DVD-RAM disc and, as such, cannot be duplicated by a DVD recorder.
Be aware that not all DVD players, drives and recorders that play or write DVD Video Recording formatted (DVD-VR) discs are compatible with CPRM and that not all blank DVD-RW and DVD-RAM discs are equipped with the NBCA or BCA necessary to handle CPRM content. If in doubt, consult with the hardware or disc manufacturer.
http://www.osta.org/technology/dvdqa/dvdqa7.htm