But many contemporary SACDs add a layer of unprotected CD to the DRM-heavy SACD layer--and the new DualDisc
puts regular CD on one side, DVD-Video (with DRM) on the other.
A European group led by pressing firm Sonapress are working on a format called DVD Plus and five major record firms have begun test-marketing a format called DualDisc
in the US However, a spokesman for Phillips, who along with Sony invented the CD format, warn the discs do not completely meet CD specifications.
InterVideo WinDVD 5 and the DVD-Audio Pack can be used to play the new CD/DVD Audio flip disc, called DualDisc
. The CD/DVD Audio discs are double-sided discs with Compact Disc-compatible digital audio (44.1kHz 16-bit) on one side and high-resolution (192kHz 24-bit) DVD-Audio content on the other side.