Reply to Re: Which copy protection?

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Posted by Brendan R. Wehrung on 07/31/06 03:55

Voinin (vboing@boing.biz) writes:
> On 7/30/2006 2:30 PM, Sune Mlgaard went clickity-clack on the keyboard
> and produced this interesting bit of text:
>> Hi all.
>>
>> I read the FAQ section on copy protection, but I didn't seem to find the
>> scheme that is responsible for the following:
>>
>> On my linux box, when I insert a labeled copy-protected DVD, I can mount
>> the volume fine. Trying to read any files on it, however, results in I/O
>> errors at the kernel level:
>>
>> Jul 30 19:39:53 jekaterina kernel: [24270.306257] hdc: command error:
>> status=0x51 { DriveReady SeekComplete Error }
>> Jul 30 19:39:53 jekaterina kernel: [24270.306263] hdc: command error:
>> error=0x54 { AbortedCommand LastFailedSense=0x05 }
>> Jul 30 19:39:53 jekaterina kernel: [24270.306267] ide: failed opcode
>> was: unknown
>> Jul 30 19:39:53 jekaterina kernel: [24270.306270] end_request: I/O
>> error, dev hdc, sector 1536
>>
>> I know from the label that the disc is protected, however, it is unclear
>> to me, if the scheme is part of the DVD Video specification. The disc is
>> clearly marked with the DVD Video logo, so in effect, I am trying to
>> ascertain if the disc is mislabeled.
>
> My understanding of it is that copy protection has nothing to do with
> it. A license has to be bought to decode video DVDs. Generally
> speaking, you pay for such a license when you buy a DVD player or
> software that will play a DVD. For example, if you don't install a DVD
> player on a Windows box Windows Media Player won't play back a video
> DVD. This is because neither Windows nor WMP comes with a license to
> play the DVD video. You'll need to purchase software that will play the
> DVDs.
>
> --
> "The smallest feline is a masterpiece." - Leonardo da Vinci


But anything that bills itself as "Media Center" by definition plays all
common media, so you'd get the ability with the computer, wouldn't you?

Brendan

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