Stefan Schreiber wrote:
Andy Furniss wrote:
Nothing to do with this thread and I am not saying that any players
use it, but I did see the words Ambisonic and WXYZ in the spec, so
there is some provision for carrying and flagging as special
b-format in a DTS extension stream.
Maybe hidden in the TrueHD spec, but Blu-Ray doesn't support anything
like WXYZ. Having worked a bit on disc standards before, and never
saw anything of this...
I don't claim any expertise in anything I write here and am often wrong
:-) but ...
I would say that's debatable, in that bluray players should accept
Dolby/DCA and both are specified so that decoders skip
substreams/extensions that they don't know about.
Additionally if instructed, the player can just pass on bitstreams
without decoding to a receiver without caring what it contains.
Of course there may not currently exist and decoders that could use
wxyz, but from a compatibility point of view I don't thing it would be
impossible for current disks/players to handle a stream with wxyz
embedded - they wouldn't know or care. Even a normal decoder wouldn't
care and could just do what it knows about. If a stream with wxyx were
not primary - and bluray can mux many soundtracks, you could even have
the core compatibility stream contain sound telling you that you need a
special setup to use this track.
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