The Lazy Genius

Security News & Brain Dumps from Xavier Ashe, a Bit9 Client Partner

Copying of HD DVD and Blu-ray successful

Posted by Xavier Ashe on August 3, 2006

The solution was surprisingly low-tech: the user simply hit the
PrintScreen key. The screen capture feature of the operating system
allowed each frame to be digitally captured exactly as it was displayed
on-screen. Since it would be impractical to sit around advancing movies
frame by frame and hitting PrintScreen all day, a script was used to
automate the process. Each frame resulted in a 2 MB image. The
computers used were fast enough to capture 30 frames per second,
enabling real-time capturing of the movies without dropped frames. For
a 90-minute movie, this is 162,000 frames, or approximately 324 GB in
total storage, so if you try this, make sure you have lots of free hard
disk space! The sound tracks must be captured separately and then
re-synched with the video, so this is by no means a trivial process.

The magazine said that it has verified the capability with Sony's first
Blu-ray PC (the VGC-RC 204) as well as Toshiba's HD DVD-equipped
notebook, the Qosmio G30. Both of these computers use a new HD version
of the popular WinDVD playback software to display high-definition
movies. The “security” issue has been confirmed by Toshiba, and the
company plans to issue a software and graphics driver update that will
presumably disable the PrintScreen functionality. According to Toshiba,
this version of WinDVD does not violate the security stipulations in
the AACS license agreement, therefore the software update should be
optional for users. However, in theory new movies could switch license
keys, requiring a software update to restore movie playback
functionality.

Still, the old adage remains true: if a computer can display something,
some sort of software can capture it. If it's not PrintScreen, it might
very well be something else.

Read the full article on ArsTechnica.

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