[mythtv-users] Dual tuners - how does the sound work?

Robin Smith 1canuck2 at gmail.com
Thu Jan 13 00:21:24 EST 2005


I have no cable from my tuner card to my soundcard. The tuner card
"captures" the audio along with the video. The soundcard is only for
playback.


On Thu, 13 Jan 2005 14:15:52 +1100, Phill Edwards
<philledwards at gmail.com> wrote:
> I currently have a bt878 chip tuner card and I want to buy a 2nd one
> but I don't understand how the sound recording can possibly work on
> this setup. From what I understand at the moment, the sound gets
> recorded by connecting a lead from the sound out from the tuner card
> to the line in of the sound card (which in my case is  on-board). If
> that lead is not connected in this way then I'll get a video recording
> with no sound. Am I right so far?
> 
> So, when I put a 2nd tuner card in how do I connect the sound out to
> the line in of the sound card when it's already been taken up by the
> 1st tuner card? Is this when you need btaudio? I believe not all tuner
> cards support btaudio. How can I determine which do and which don't -
> from what I've seen it seems to just be some Hauppauges and WinTV
> Radio?
> 
> Are my options as follows:
> 
> 1) Buy a sound card when I buy a tuner card, OR
> 2) Buy a tuner card that supports btaudio (very limited choice and
> expensive, I believe)
> 
> Lastly, my mobo has a S/PDIF connector which I currently have no idea
> how to use but I do want to get Dolby digital working in the future
> for DVD playback. Does this have any bearing on what sort of sound
> card I should buy if I go for option 2?
> 
> Regards,
> Phill
> 
> 
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