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The following is the Summary of the Recommended Technical Requirements for DVD audio discs:
By Gary Reber
• An Active Copyright Management System (ACMS) must be incorporated in all DVD machines, which will enable comprehensive protection of rights holders in the sound recording.
• The ISRC copyright identifier and the ACMS must be included on the disc and in the main audio stream for all DVD equipment.
• Anti-piracy measures require that all discs will carry SID mold codes, space will be allocated on the disc to allow for anti-piracy identifiers, and recordable and prerecorded DVD discs will carry identifying and distinguishing marks.
• For compatibility, CD discs must play on DVD machines and DVD audio discs must play on CD machines.
• DVD "pure audio" discs must allow for audio, video, and data.
• The provision for conditional access to additional content as determined by the rights holders. As an example, an encryption allowing access to the music video portion of the disc would require a consumer to get from the record company the "code" to unlock the playback. This provision in the standard must allow for the free and integral expression of the creators of the works.
• DVD players must provide six independent scalable output channels, utilizing the increased disc capacity to provide the highest possible sound quality. There should be an agreed form of lossless compression for the data on the discs, which will restore identically, bit-for-bit, the original data file at the DVD player/recorder's output.
• The transfer of existing digital masters to the DVD format must occur without loss of quality.
• Facilities and features of DVD machines should be improved over those provided by CD players, such as the inclusion of album and track titles, artist name(s), etc.
• There must not be a disc caddie.
• The DVD discs must be more robust than CDs against scratches and minor damage.
• A one-sided 12cm disc format is favored.
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