[mythtv-users] Confused About HDHomeRun

[Drew Tomlinson]

On 10/1/2007 3:44 PM R. G. Newbury said the following:
> Drew Tomlinson wrote:
>   
>> On 10/1/2007 1:34 PM David George said the following:
>>     
>>> On 10/01/2007 03:49 PM, Drew Tomlinson wrote:
>>>   
>>>       
>>>> I have a MythTV box running .20.2 on Gentoo.  It has one PVR-250 and one 
>>>> pcHDTV 3000 card.  I have two lineups on SchedulesDirect, one for 
>>>> DirecTV and one for the antenna.  The DirecTV lineup is the video source 
>>>> attached to the S-Video input on the PVR-250 and the antenna lineup is 
>>>> the video source for the pcHDTV .
>>>>
>>>> Now I have added a HDHomeRun to my network.  I added the HDHR as two 
>>>> separate capture cards in mythtv-setup and they show up as additional 
>>>> tuners in the status page.  I used the same antenna lineup for both HDHR 
>>>> tuners as I use for the pcHDTV card.
>>>>
>>>> So now I expect to see most conflicts resolved in my upcoming recordings 
>>>> as I now have 3 HDTV tuners but this is not the case.  MythTV is not 
>>>> using any of my HDTV tuners for recording, only the PVR-250.  I'm at a 
>>>> loss as to what I've missed.  Both tuners were working fine before.  Do 
>>>> I need a separate lineup for each tuner?  That doesn't seem right to 
>>>> me...  Any ideas on what I can check to resolve this?  I was hoping to 
>>>> resolve some conflicts before prime time tonight.  :)
>>>>   
>>>>     
>>>>         
>>> Try a 'mythbackend --resched' on your backend.  Sometimes I am not 
>>> patient enough after adding a card for a reschedule to happen, so the 
>>> --resched will force it right away.  And yes, do this while the backend 
>>> is running.
>>>   
>>>       
>> I tried but no joy.  Although now that I've scrolled down a bit in 
>> Mythweb, I see that the scheduler is using one of my HDHR inputs 
>> sometimes but not nearly as often as it could.  Here are my current cards:
>>
>> cardid   cardtype          dbox2_port
>>  8       MPEG              31338
>>  9       HDTV              31338
>> 10       HDHOMERUN             0
>> 11       HDHOMERUN             1
>>
>> Cardid 8 is the PVR-250 and is connected to a DirecTV tuner box via 
>> S-Video.  Cardid 9 is the pcHDTV 3000 and cardid 10 & 11 are the HDHR.  
>> All three of these tuners are connected to an OTA antenna and a 
>> corresponding lineup that only includes the digital channels they can 
>> receive.  All card priorities are set at 0.  I have a +2 priority set 
>> for HD programming.  Thus in this configuration, I expect that HD 
>> content will record first on the pcHDTV card, then on HDHR port 0, and 
>> finally on HDHR port 1.  Non HD content would first attempt to use the 
>> PVR-250 and then follow the previous priority.  And for completeness, 
>> all DirecTV channels will record only on the PVR-250 (obviously).
>>
>> But what I am seeing is that in most cases, all content is attempting to 
>> use cardid 8.  If it is busy, then mythtv marks the show as a conflict.  
>> For example coming up at 1700 PDT this evening, my local news is 
>> broadcast both on analog channel 3 and on digital 3_1 in HD.  At the 
>> same time, Judge Judy is shown on local analog channel 31 and although 
>> not in HD, it is also broadcast on digital channel 31_1.  This scenario 
>> happens every weekday evening.
>>
>> Normally, because the news is flagged as an HD broadcast, myth records 
>> it with pcHDTV card and records Judge Judy with the PVR-250.  This is 
>> exactly the behavior I expect.  However tonight myth has scheduled Judge 
>> Judy to use the PVR-250 and shows the news as a conflict.
>>
>> Yet tomorrow at noon, there is an episode of Cops that is not flagged as 
>> HD yet it's scheduled to record using cardid 10.  Nothing else is to be 
>> recorded at that time so this makes no sense to me.  It should record 
>> using cardid 8 or if a conflict, cardid 9.  I think my computer has a 
>> mind of its own.  :)
>>     
>
> Are you using the pchdtv card in analog mode? You state above 'Judge 
> Judy on local analog channel 31.....also....digital channel 31_1.
>   

No, only in digital.

> These require completely different tuning setups. You have to think of 
> OTA analag as the same thing as cable, but with different frequencies. I 
> don't think OTA analog even touches the dtv_multiplex table.
>
> OTOH, OTA digital is a completely different thing, especially now, when 
> stations call themselves by their analog channel names but transmit on 
> different frequencies and even the digital sub-digit (the .1) is not the 
> actual stream id.....
>   

Right.  I should have been more clear.

> If that is the case, you  need THREE lineups. analog cable, analog ota 
> and digital ota.
>
> You seem to be confusing HD with digital. Not all digital is HD. Lots of 
> it is SD. In fact, in my area, 3 stations broadcast an HD AND an SD 
> stream, in digital. The latter is for people with old tvs who can't 
> display HD.
>   

All three antenna tuners are digital only.  Thus, two lineups is sufficient.

Thanks,

Drew

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