[mythtv-users] question involving multiple frontends

[Simon Hobson]

Michael T. Dean wrote:

>>Is it possible to lock a card to a multiplex ? And is it possible 
>>to have the system work with that ?
>
>>Yeah, you could do it by having separate Video Sources defined in 
>>mythtv-setup for each capture card.

So that would be a case of configuring each card/source to use only 
the channels on one multiplex then ? When a user changes from (say) 
BBC 2 to BBC 3, the system sees that BBC 3 isn't available from the 
current source, and automatically switches the a source that does 
offer it ?

Hopefully the last question, is there any problem with more than one 
person (or recording) using the same channel from the same card ? 
Does the card driver simply split out the data stream for the channel 
and feed it to each destination that wants it.

>>Over in the UK, we have a max of 6 multiplexes on terrestrial 
>>digital. So with multirec, it would seem logical that with 6 tuners 
>>it should be possible to access any combination of channels - even 
>>well in excess of 6.
>>
>>But unless the system can cope with it, we'd still be in a position 
>>where two LiveTV users could take up two tuners - set to the same 
>>multiplex.
>
>Right.  So in this case, if you have people using LiveTV and don't 
>want to buy more capture cards for them, you'd have to have 6 Video 
>Sources--one for each multiplex.  Then, each capture card would be 
>associated with a single Video Source.  It would be important to 
>choose the Video Sources to associate with particular cards very 
>carefully if you have multiple backends (to ensure that you don't 
>have all the channels with interesting shows on the master backend 
>and have a slave backend whose channels are never recorded/whose 
>storage would never be used).

Good points there.

-- 
Simon Hobson

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