[mythtv-users] duplicate dvb tuner shows up

[Michael T. Dean]

On 04/30/2015 11:01 AM, James Miller wrote:
> On Thu, 30 Apr 2015, James Miller wrote:
>
>> shows up twice in Myth frontend? I guess I could go back into 
>> mythtv-setup and uncheck that option to see whether the duplicate 
>> tuner would disappear. I may try that later but will probably wait to 
>> see whether others weigh in on this query.
>
> I decided another, easier test I could conduct to better understand 
> this issue would be to schedule two simultaneous recordings through 
> that capture device. I've just now done that and, sure enough, the 
> system is now recording two separate broadcasts simultaneously. 
> Checking system status, I see that both tuners 14 and 16 (both of 
> which are tied to the symlink I created for this USB tuner) are 
> recording. So the capability of tuning two separate channels 
> simultaneously using this tuner does, in fact, seem to be the 
> explanation for why it shows up twice in the frontend. I learned 
> something new and interesting already today!

Remember it's actually tuning only one channel in a given multiplex, but 
is able to record multiple (with your configuration of 2 virtual tuners, 
2) subchannels from that mux.  So you can't record from two channels 
broadcast on different frequencies at the same time with the one 
physical tuner.

Mike