[mythtv-users] System audio via PVR-350

Joe Votour joevph at yahoo.com
Sat Sep 2 23:58:50 UTC 2006

> On Sat 02 Sep 2006 at 15:56:48 -0700, you wrote:
>> Unfortunately, if you wish to use the MPEG-2 decoder in the PVR-350, it
>> is
>> that convoluted.  Of course, the TV I had at that time had separate
>> S-Video and audio connectors, so I never had a problem connecting things
>> properly.  (But again, remember, I'm in North America, where SCART is
>> only
>> on imported devices.)
>> As somebody else mentioned in this thread, you can use the Xv driver for
>> the PVR-350 and bypass the MPEG-2 decoder - then you wouldn't have to
>> have
>> the loop from the PVR-350 to your sound card, as everything would come
>> out
>> of the sound card.  However, that increases CPU utilization by a fair
>> amount, it really depends on how beefy a system you have.
> Hmm, well, my TV does have a DVI input, too, and that input DOES accept
> 2 RCA connectors. To use it, I'd have to put a reasonable video card in
> the AGP slot and use software decoding, as you point out, but then I'd
> have audio via the sound card.
> Of course, if I did that, wouldn't I have to buy another sound card in
> order to capture/listen to the audio from the second tuner card? Or
> could I get by with a single sound card? It's not completely clear to me
> when exactly multiple sound cards are required.
> Thanks,
> Ian

It depends on what kind of capture card you have.  If you're using an
MPEG-2 capture card (like a PVR-350), then no, you don't need another
sounds card.  If you're using a software capture card (one that uses the
bttv driver), and it doesn't support btaudio (few do), then you will.

For more information, I redirect you to the excellent documentation on the
MythTV website:
(See the sections specifically entitled, "Video Capture Device" and,
"Sound card", although it's all a good read.)

-- Joe

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