[mythtv-users] Multiple Streams, tuner priority and the Scheduler

Kevin Kuphal kkuphal at gmail.com
Tue Feb 8 13:57:20 UTC 2011


On Mon, Feb 7, 2011 at 7:57 PM, Joseph Fry <joe at thefrys.com> wrote:

> I have an HDHomeRun configured for up to 4 streams on each tuner, as well
> as a couple of PVR150's.  For the last few months my cable company has put
> all the standard cable channels in clear QAM in groups of 10 SD streams per
> multiplex channel.  So my local network channels (CBS, ABC,NBC, FOX, etc)
> are available on the same multiplex allowing me to theoretically record all
> the networks at the same time; additionally they are offered in HD on other
> channels.
>
> Every so often I get a situation where I want to record 3 shows, and the
> scheduler will choose to record two HD streams and force the third show to
> use an Analog tuner, even though analog tuners have a lower priority(-1).
> Obviously, if the scheduler would favor multiple streams when possible, all
> of my recordings would be digital.  Keep in mind that I have not added any
> priority points to HD recordings.  This does not happen every time I have 3
> simultaneous recordings, but it does happen.  For example, the following 3
> shows are all offered on the same SD multiplex.
>
>
> Digital Tuner 1 HD American Idol: Auditions No. 8<http://mythserver/mythweb/tv/detail/3041/1297386000> 11-HD
> - WTNZ Thu Feb 10, 2011 (08:00 PM) 1 hr   Analog Tuner 1 The Vampire
> Diaries: Crying Wolf <http://mythserver/mythweb/tv/detail/1012/1297386000> A12
> - WBXX Thu Feb 10, 2011 (08:00 PM) 1 hr   Digital Tuner 2 HD Wipeout:
> Winter Wipeout: This Little Piggy Went to Wipeout<http://mythserver/mythweb/tv/detail/3021/1297386000> 13-HD
> - WATEDT Thu Feb 10, 2011 (08:00 PM) 1 hr
> My guess is that it is shows that are recorded before and after are
> influencing the scheduler.  However I still cannot see why it doesn't drop
> to the SD channel multiplex so that everything fits on two tuners instead of
> 3.
>
> So my question is, what adjustment can I make to encourage the scheduler to
> try and keep all of my recordings on the digital tuners, even if that means
> that the two lowest priority shows must be recorded in SD.  Would increasing
> the tuner priority difference (analog vs digital) make any difference?  Is
> there a way to rank the digital so high that analog is only used if there is
> no alternative.
>
> Any advice?
>

There's an option in Myth that gives shows marked as HD in the listings a
priority bump.  I suspect if you turn that off you'll get more desired
results.

Kevin
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