You are very confused...
First of all, forget channel count, as it is really irrelevant.
A film soundtrack master is in PCM format. Some of the HD discs use this raw uncompressed PCM soundtrack.
All of the other "formats" are just different ways to compress the PCM data. Dolby TrueHD and DTS-HD Master Audio are LOSSLESS forms of compression and should sound identical to the PCM master. DD, DTS, DD+, DTS-HD are all LOSSY forms of compression in which data is thrown out to save space and bitrate.
To "bitstream" means that a player is sending the compressed data (DD, DTS, etc) to a decoder elsewhere (typically a receiver).
That's really all there is to it.
You need an HDMI connection (or a player that has analog outputs and the appropriate decoding) to transfer the "advanced codecs" -- DD+, DTS-HD, TrueHD, and DTS-HD MA -- or multichannel PCM. Digital audio cables (optical or coaxial) can only transmit 2-channel PCM or up to 6.1 channel DD/DTS.
First of all, forget channel count, as it is really irrelevant.
A film soundtrack master is in PCM format. Some of the HD discs use this raw uncompressed PCM soundtrack.
All of the other "formats" are just different ways to compress the PCM data. Dolby TrueHD and DTS-HD Master Audio are LOSSLESS forms of compression and should sound identical to the PCM master. DD, DTS, DD+, DTS-HD are all LOSSY forms of compression in which data is thrown out to save space and bitrate.
To "bitstream" means that a player is sending the compressed data (DD, DTS, etc) to a decoder elsewhere (typically a receiver).
That's really all there is to it.
You need an HDMI connection (or a player that has analog outputs and the appropriate decoding) to transfer the "advanced codecs" -- DD+, DTS-HD, TrueHD, and DTS-HD MA -- or multichannel PCM. Digital audio cables (optical or coaxial) can only transmit 2-channel PCM or up to 6.1 channel DD/DTS.
