Re: [mythtv-users] Dual tuners - how does the sound work?
On January 13, 2005 10:55 am, Robin Smith wrote: > Sorry, I was confused on the bttv thing, go with Joe's advice. I have > the PVR-250, which does not require the connection to a sound card. > > However, most of the Creativbe soundcards (the only ones I have ever > used) also have an Aux In connector, could you not hook the second > card up to the Aux In and configure both to be recording sources? > Sure there are all sorts of inputs, but you can only record from one of them at a time. Mark ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Dual tuners - how does the sound work?
Sorry, I was confused on the bttv thing, go with Joe's advice. I have the PVR-250, which does not require the connection to a sound card. However, most of the Creativbe soundcards (the only ones I have ever used) also have an Aux In connector, could you not hook the second card up to the Aux In and configure both to be recording sources? This type of PITA certainly makes an even stronger argument for biting the bullet when it comes to selecting a capture card and simply spending the extra on the PVR-250 or 350. Robin On Wed, 12 Jan 2005 21:35:35 -0800 (PST), Joe Votour <[EMAIL PROTECTED]> wrote: > It depends on the capture card that is being used. > > The PVR-x50/AverMedia M179, and other cards supported > by the ivtv driver do not require a seperate cable for > audio because the the sound is captured as part of the > MPEG-2 stream. > > However, cards controlled by the bttv driver (which > are essentially frame grabbers) require some sort of > sound capture. Some cards work with btaudio, which > generates a sound device (/dev/dspx, where x is a > number) that MythTV can read from for the sound. > > Cards that don't support btaudio require a connection > to a sound card, so for every bttv card you have that > does not support btaudio, you require a sound card, > with a cable connecting the capture card to the sound > card (on the Line-In port). > > It is possible to have multiple sound cards in a PC, > as long as you have enough PCI slots for them. This > tends to be a problem for people with bttv cards, > since you wind up with two problems - bttv cards > require a lot more CPU than a PVR-x50 card, and you'll > run out of PCI slots quickly. > > -- Joe > > --- Robin Smith <[EMAIL PROTECTED]> wrote: > > > 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 > > <[EMAIL PROTECTED]> 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 > > > > > > > > > ___ > > > mythtv-users mailing list > > > mythtv-users@mythtv.org > > > > > > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users > > > > > > > > > > > > ___ > > mythtv-users mailing list > > mythtv-users@mythtv.org > > > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users > > > > > __ > Do you Yahoo!? > The all-new My Yahoo! - Get yours free! > http://my.yahoo.com > > ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Dual tuners - how does the sound work?
It depends on the capture card that is being used. The PVR-x50/AverMedia M179, and other cards supported by the ivtv driver do not require a seperate cable for audio because the the sound is captured as part of the MPEG-2 stream. However, cards controlled by the bttv driver (which are essentially frame grabbers) require some sort of sound capture. Some cards work with btaudio, which generates a sound device (/dev/dspx, where x is a number) that MythTV can read from for the sound. Cards that don't support btaudio require a connection to a sound card, so for every bttv card you have that does not support btaudio, you require a sound card, with a cable connecting the capture card to the sound card (on the Line-In port). It is possible to have multiple sound cards in a PC, as long as you have enough PCI slots for them. This tends to be a problem for people with bttv cards, since you wind up with two problems - bttv cards require a lot more CPU than a PVR-x50 card, and you'll run out of PCI slots quickly. -- Joe --- Robin Smith <[EMAIL PROTECTED]> wrote: > 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 > <[EMAIL PROTECTED]> 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 > > > > > > ___ > > mythtv-users mailing list > > mythtv-users@mythtv.org > > > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users > > > > > > > > ___ > mythtv-users mailing list > mythtv-users@mythtv.org > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users > __ Do you Yahoo!? The all-new My Yahoo! - Get yours free! http://my.yahoo.com ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Dual tuners - how does the sound work?
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 <[EMAIL PROTECTED]> 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 > > > ___ > mythtv-users mailing list > mythtv-users@mythtv.org > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users > > > ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
[mythtv-users] Dual tuners - how does the sound work?
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 ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
