It has just been confirmed that currently the existing graphic cards on the market will not be able to play High-Definition DVD. Even when they display an HDCP-compatible label. As said on Darknet.com:
We’ve been able to confirm that none of the Built-by-ATI Radeons support HDCP. If you’ve just spent $1000 on a pair of Radeon X1900 XT graphics cards expecting to be able to playback HD-DVD or Blu-Ray movies at 1920×1080 resolution in the future, you’ve just wasted your money.
NVIDIA, being a GPU manufacturer was unable to discuss the plans of board manufacturers. We contacted all six of NVIDIA’s Tier-1 board partners. None of the GeForce 6 or 7 video cards available on the market, including the most recently released GeForce 7800GS, have HDCP support. So if you just spent $1500 on a pair of 7800GTX 512MB GPUs expecting to be able to play 1920×1080 HD-DVD or Blu-Ray movies in the future, you’ve just wasted your money.
I feel that people will have to go to bootleg copies on P2P networks just to be able to look at the HiDef-DVD they bought. Piracy will not stay rampant.