What audio codecs must all HD DVD players decode?
Main Audio: LPCM, Dolby Digital, Dolby Digital Plus, Dolby TrueHD, MLP Lossless, DTS-HD (DTS Core only), MPEG-1 Layer II, MPEG-2 BC Layer II (w/o extensions) in either two (Performance Level 1) or 5.1 (Performance Level 2) channels. Sub Audio: Dolby Digital Plus, DTS Digital Surround and DTS Express. Effect Audio: LPCM.HD DVD-Video Player Mandatory Audio Decoding Codec Performance Level 1 (PL1)Performance Level 1 (PL1)Performance Level 2 (PL2)Performance Level 2 (PL2) Main AudioSub AudioMain AudioSub AudioLPCM 2 channelsNA5.1 channelsNADolby Digital 2 channelsNA5.1 channelsNADolby Digital Plus 2 channels2 channels5.1 channels2 channelsDolby TrueHD 2 channelsNA5.1 channelsNAMLP Lossless 2 channelsNA5.1 channelsNAMPEG-1 Layer II 2 channelsNA5.1 channelsNAMPEG-2 BC Layer II 2 channelsNA5.1 channelsNADTS-HDDTS Core2 channelsNA5.