What types of audio are compatible with DVD?
There are five types of audio that can be on a DVD: PCM, Dolby Digital (AC3), MPEG Audio, DTS (Digital Theater System) and SDDS (Sony Dynamic Digital Sound). PCM audio and Dolby Digital(AC3) are the only universally compatible types of audio for DVD. That is, they work worldwide on every player. MPEG Audio is compatible with most newer models but is not universal. DTS playback requires special hardware and SDDS is a new 7.1 surround developed for theaters and no current systems support it.