[mythtv-users] Silicon Dust HDHR5-4K

[Gary Buhrmaster]

On Tue, Oct 27, 2020 at 3:14 PM John P Poet <jppoet at gmail.com> wrote:

>
> Do you have a preamp or receiver capable of decoding Dolby Atmos? If so, that should decode the AC-4 as well, from what I have read.
>

In my (limited) understanding of AC-4,
AC-4 is a brand that includes both the
codec, and the definition of the container
which may include both linear audio
and audio object capabilities/technologies
(in some not so equivalent ways, think
about the mpeg2 branding being used
both for the transport stream, and the
codec).  While Atmos uses AC-4, AC-4 is
(for some values) extensible and subsetable,
such that there is no assurance that all
AVRs that supports Atmos will support
how AC-4 may be used in ATSC 3.0
(and I do not recall seeing any recent
AVR that called out ATSC 3.0 AC-4
support explicitly, but then again, not
being in the market, I have not really
paid much attention to the marketing
fluff around the newest AVRs).

But it is certainly worth a try.

And if your high end AVR with Atmos
does not support ATSC 3.0 AC-4, it may
be time to contact the manufacturer to
ask about future firmware updates.