[mythtv-users] capture card

[Jim Beckett]

Nick Morrott wrote:
> On 4 February 2010 14:31, Misc Things <formisc at gmail.com> wrote:
>   
>> On Thu, Feb 4, 2010 at 8:55 AM, Nick Morrott <knowledgejunkie at gmail.com> wrote:
>>> .. However, it is very unlikely  (although not impossible depending on
>>> your TV service) to be able to
>>>       
>> do this for all of the channels you can receive, ...
>>
>> Nick,
>>  why you think it maybe imposable to record more then 2 shows at the same
>> time ?

>> Consider the scenario where you are trying to record two channels
>> simultaneously that are on different muxes. You cannot do this with
>> one physical tuner as it can only tune to one mux at a time. However,
>> if all available channels are broadcast on a single mux, it would be
>> possible - although the chance of this must be small.
>>
>> Cheers,
>> Nick
>>     
Just to put this in terms that are clearer to those of us that are not 
in tune (pun intended) with the lingo...

If there are multiple shows being broadcast on the same frequency 
(mux/multiplex), a single (multi-record capable) card should be able to 
record two, or more, shows at a time.

The limitations on this are the amount of data your hardware can handle, 
and how many shows are available on the frequency at the time.

However, if the shows that you want to record are on different 
frequencies, then you will need another physical tuner for each show 
that you want to watch/record, as you can only tune a single frequency 
at a time.

For example, in my area, the local ABC and NBC broadcasts come in on the 
same frequency, but, CBS comes in on a different frequency.

This means that I can record whatever ABC, and NBC, are showing, at the 
same time. However, if I wanted to record shows from ABC and CBS at the 
same time, I would either have to choose between them, or have another 
available physical tuner to get both shows.

Hopefully, that clears it up.

- Jim
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