[mythtv-users] How does Myth 31 handle HDHomeRun devices with multiple tuners?

[David Engel]

On Tue, Jul 28, 2020 at 11:28:17AM -0700, Douglas Peale wrote:
> On 7/28/20 11:20 AM, Jay Foster wrote:
> > On 7/28/20 10:20 AM, Mike Bibbings wrote:
> >> On 28/07/2020 18:06, DryHeat122 wrote:
> >>> I just got a new Myth 31 built and working with an HDHR Connect Duo.  On my previous 0.28 install, I had to install separate
> >>> capture cards for the second tuner.  When I tried this in 31, setup couldn't find the second device.  Does Myth now manage
> >>> multiple tuners through one capture card configuration?
> >>>
> >>> _______________________________________________
> >>
> >>
> >> A Capture Card per input is required.
> >>
> >> See https://www.mythtv.org/wiki/Channel_Scanning#Scanning_with_HDHomeRun_tuners
> >>
> >>
> >> Mike
> >>
> >>
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> >
> > I will likely encounter this issue myself in the future, but I'm not there yet.  I also am currently using 0.28 with three
> > 2-tuner HD Homeruns.  My configuration currently has each of the 6 tuners connected to its own input (6 inputs).  Three of the
> > tuners are connected to one antenna and the other three connected to a second antenna.  This allows me to adjust which
> > channels are receivable for each input.  Will the new pooling method allow this usage?  Note that each tuner in each HDHR is
> > treated independently of the other tuner in the same HDHR (they each have their own antenna coaxial connector).
> >
> > Jay
> >
> >
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> 
> I used to have two HDHR-2 tuners connected to three antennas. This is no longer possible with the current setup of MythTV.

Correct.  MythTV expects that all tuners on the same HDHR receive the
exact same channels.

> Newer HDHomeRuns have only one input per box, so the MythTV setup works for them, but the upcoming ATSC 3.0 HDHomeRun which I
> expect to get next month has one input and 4 tuners, two of which are ATSC 3.0, and the other two are ATSC 1.0. So far there are
> no ATSC 3.0 stations in San Francisco, but this will be changing soon.
> 
> I hope that MythTV has addressed this issue before that happens.

Chances are almost 100% that MythTV won't fully support the new HDHR
by then.  The HEVC encoding used with ATSC 3 might shouldn't be too
hard to support in MythTV master.  The asymmetric tuning for ATSC
3/ATSC 1 very likely won't work until someone (probably me) knows how
it works on the device and can test it.  Since I'm not currently
planning on getting the new HDHR, the testing part will be a problem.

David
-- 
David Engel
david at istwok.net