[mythtv-users] Can I restrict live-TV to certain tuners?

Bruce Markey bjm at lvcm.com
Tue Mar 6 01:42:04 UTC 2007

Brad DerManouelian wrote:
> On Mar 5, 2007, at 12:58 PM, ryan patterson wrote:
>> On my MythTV backend I have 4 HD tuners hooked up to an antenna and  
>> one SD tuner hooked to a cable box (with irblaster control).  I  
>> only want to have Live-TV access one HD tuner.  I want to reserve  
>> the cable box tuner and three HD tuners for recording scheduled  
>> shows.  The fourth HD tuner should always be reserved for HD Live-TV.
>> Unfortunately I see no way to limit the tuners that are available  
>> to live-TV.  Is there any way to do what I am suggesting?  As it is  
>> now entering Live-TV sometimes selects the cable box tuner and  
>> sometimes selects a HD tuner.  This behavior is very confusing to  
>> the geriatrics in the house.
>> -- 
> If you order your tuners by priority (putting the one you want to use  

This is almost the perfect answer except:

s/proirity/card number/

"Priority" is for scheduled recording decisions and has
nothing to do with live TV card selection.

> for Live TV last) and tell Myth to try to reduce LiveTV conflicts by  
> using the tuner least likely to have a recording coming up, you will  
> always get that last tuner unless it's actually recording something.  
> This is probably the functionality you really want.

Correct, given that "last tuner" is the highest numbered
cardid and has nothing to do with any scheduler priority

If the cardids are:

1 HD
2 HD
3 HD
4 cable box
5 HD

and TV Settings->General "Avold conflict between live TV and
scheduled shows", Live TV will always choose card 5 for the
first instance of a Live TV session. That is, unless there are
exactly 4 simultaneous HD recordings and zero cable recordings.

Further, the input priority for the input on card 5 could be
lowered to -1 so that the scheduler would reassigned recordings
to later showings on 1, 2 or 3 whenever possible instead of using
card 5.


> For that matter, the functionality you REALLY want is no one to ever  
> watch LiveTV and only watch what's been recorded. ;)

Correct again.

--  bjm

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