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Posted by AZ Nomad on 10/11/05 02:07
On Mon, 10 Oct 2005 18:43:59 -0700, jazu <nospam> wrote:
>Is that true that rental DVD have some safety feature to prevent copying?
yes, and it's exactly the same as the "safety features" of purchased DVDs.
DVD players output a defective NTSC signal in the form of macrovision. Modern
TV sets are built to ignore the defect while modern VCRs will either record at a
constantly changing brightness level or refuse to record at all.
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