Which formats are HD DVD players required to decode?
HD DVD players are required to have decoder support for DD (legacy), DTS (legacy), DD+, and Dolby TrueHD. Only stereo (2 channel) support is required for Dolby TrueHD however all standalone players released to date support multichannel channel decoding. No decoder is necessary for LPCM as it is stored uncompressed on the disc. All HD DVD players must support outputting up to 2 channels @ 192Khz/24bit and 8 channels @ 96Khz/24bit. Decoder support for DTS-HD and DTS-HD MA is optional in the HD DVD spec. No HD DVD player supports decoding these formats internally. The HD-XA2, HD-A35, and DV-HD805 support bitstreaming the audio via HDMI v1.3 to a receiver capable of decoding the format.