Re: [mythtv-users] Redirecting PVR-350 audio to soundcard for live TV / playback

2006-01-03 Thread John Andersen
On 1/2/06, Jan Kat <[EMAIL PROTECTED]> wrote:
> On Mon, 2006-02-01 at 17:20 -0700, Jan Kat wrote:
>
> > I just noticed that, although there is no place to install a CD-ROM on
> > this PC (no opening in the front bezel -- I had to open the case to
> > attach one and install Gentoo), there is a CD audio connector on the
> > motherboard.  I'll have to test it, but if it's a standard connector, I
> > may be able to bring the PVR-350's audio back into the soundcard through
> > that.
>
> Yep, that works.  I get the impression that it's not possible to pull
> the audio off the PVR-350 via the PCI bus, so I guess I'll go this
> route.  Unless anyone else has any suggestions?

An elegant hack, and I was about to suggest it when you
beat me to it.  There may be more audio inputs (aux?) on
the mobo when you start digging around, but since
you don't need that one, and if the voltages are ok
(check the specs) its a cool solution.


--
--JSA-
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Re: [mythtv-users] Redirecting PVR-350 audio to soundcard for live TV / playback

2006-01-02 Thread Jan Kat
On Mon, 2006-02-01 at 17:20 -0700, Jan Kat wrote:

> I just noticed that, although there is no place to install a CD-ROM on
> this PC (no opening in the front bezel -- I had to open the case to
> attach one and install Gentoo), there is a CD audio connector on the
> motherboard.  I'll have to test it, but if it's a standard connector, I
> may be able to bring the PVR-350's audio back into the soundcard through
> that.

Yep, that works.  I get the impression that it's not possible to pull
the audio off the PVR-350 via the PCI bus, so I guess I'll go this
route.  Unless anyone else has any suggestions?

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Re: [mythtv-users] Redirecting PVR-350 audio to soundcard for live TV / playback

2006-01-02 Thread Jan Kat
On Mon, 2006-02-01 at 15:10 -0500, Brad DerManouelian wrote:
> On Jan 2, 2006, at 3:05 PM, Joe Votour wrote:
> 
> > You have two options here:
> > 1. Don't use the PVR-350 MPEG-2 decoder for watching
> > shows.  Use Xv that is provided with the newest
> > drivers (0.4.x).
> > 2. Put in a second sound card and use it for looping
> > the sound.
> >
> > -- Joe
> 
> His CPU speed won't support option 1. A third option is to use an  
> external mixer. Plug the audio from your PVR-350 and the audio from  
> your onboard audio into the mixer and then out from your mixer to  
> your TV/receiver/whatever you're listening on. I did this for a while  
> and worked like a charm until I figured out my sound card loop issues  
> (lots of noise = wrong alsa mixer settings).

You're right about my CPU being underpowered.  In fact, it looks like
I'll have to use the ivtv patch for mplayer and transcode my DVDs to
SVCD-quality MPEG2s.

I just noticed that, although there is no place to install a CD-ROM on
this PC (no opening in the front bezel -- I had to open the case to
attach one and install Gentoo), there is a CD audio connector on the
motherboard.  I'll have to test it, but if it's a standard connector, I
may be able to bring the PVR-350's audio back into the soundcard through
that.

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Re: [mythtv-users] Redirecting PVR-350 audio to soundcard for live TV / playback

2006-01-02 Thread Brad DerManouelian


On Jan 2, 2006, at 3:05 PM, Joe Votour wrote:


You have two options here:
1. Don't use the PVR-350 MPEG-2 decoder for watching
shows.  Use Xv that is provided with the newest
drivers (0.4.x).
2. Put in a second sound card and use it for looping
the sound.

-- Joe


His CPU speed won't support option 1. A third option is to use an  
external mixer. Plug the audio from your PVR-350 and the audio from  
your onboard audio into the mixer and then out from your mixer to  
your TV/receiver/whatever you're listening on. I did this for a while  
and worked like a charm until I figured out my sound card loop issues  
(lots of noise = wrong alsa mixer settings).


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Re: [mythtv-users] Redirecting PVR-350 audio to soundcard for live TV / playback

2006-01-02 Thread Joe Votour


--- Jan Kat <[EMAIL PROTECTED]> wrote:

> After googling this problem for over a week, I'm
> beginning to think
> there is no solution.  But hopefully someone here
> can tell me once and
> for all if this can be done or if it can't and I
> just need to let it go
> and move on.
> 
> My setup:
> 
> Compaq DeskPro EN SFF - 400MHz Celeron (Mendocino),
> 128MB RAM, ES1869
> onboard sound
> 
> WinTV PVR-350 (model 48132, rev. K268) w/ tuner LG
> TAPE H001F MK3 (type
> 47)
> 
> Gentoo 2005.4, kernel 2.6.14-gentoo-r5
> (gentoo-sources)
> 
> IVTV 0.4.0 (latest from IVTV site)
> 
> MythTV 0.18.1-r1 (emerged)
> 
> 
> My problem (and some history):
> 
> The PC is a small form factor originally intended as
> a network
> appliance.  Painted black, it looks sharp with my
> other stereo
> components.  However, there is no audio line-in on
> the rear bezel nor
> pinned out on the motherboard.
> 
> I started with a 2.4 kernel but couldn't tune in any
> stations; an
> upgrade to 2.6 seems to have fixed that (though it
> could have been one
> of the many other things I tried).  Everything
> works, but the audio from
> live TV and playback comes through the PVR-350 (in
> MythVideo, mplayer
> plays video through the PVR-350 and audio through
> the ES1869).
> 
> As noted, I can't loopback audio from the PVR-350 to
> the ES1869 as there
> is no line-in.  I know that audio can be pulled
> directly over the PCI
> bus from bttv cards; I'm wondering if the same can
> be done with a
> PVR-350, and how I would set that up?
> 
> I read that MythTV 0.18.1 fixes "live TV audio loss
> when viewing mpeg2
> transport streams."  That sure sounds like my
> problem, but maybe I've
> misconfigured something so that bug fix isn't
> implemented?  Maybe
> Gentoo's MythTV-0.18.1-r1 is configured a certain
> way and I need to
> unmerge it and download and compile directly from
> the MythTV site?
> 
> I have one PCI slot free so I can put another sound
> card in, but I find
> this solution distasteful as I already have a
> perfectly good (if
> incomplete) sound card on the motherboard (which
> took some effort to set
> up, too).  But if I have no choice, I have no
> choice.
> 
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> 

You have two options here:
1. Don't use the PVR-350 MPEG-2 decoder for watching
shows.  Use Xv that is provided with the newest
drivers (0.4.x).
2. Put in a second sound card and use it for looping
the sound.

-- Joe




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[mythtv-users] Redirecting PVR-350 audio to soundcard for live TV / playback

2006-01-02 Thread Jan Kat
After googling this problem for over a week, I'm beginning to think
there is no solution.  But hopefully someone here can tell me once and
for all if this can be done or if it can't and I just need to let it go
and move on.

My setup:

Compaq DeskPro EN SFF - 400MHz Celeron (Mendocino), 128MB RAM, ES1869
onboard sound

WinTV PVR-350 (model 48132, rev. K268) w/ tuner LG TAPE H001F MK3 (type
47)

Gentoo 2005.4, kernel 2.6.14-gentoo-r5 (gentoo-sources)

IVTV 0.4.0 (latest from IVTV site)

MythTV 0.18.1-r1 (emerged)


My problem (and some history):

The PC is a small form factor originally intended as a network
appliance.  Painted black, it looks sharp with my other stereo
components.  However, there is no audio line-in on the rear bezel nor
pinned out on the motherboard.

I started with a 2.4 kernel but couldn't tune in any stations; an
upgrade to 2.6 seems to have fixed that (though it could have been one
of the many other things I tried).  Everything works, but the audio from
live TV and playback comes through the PVR-350 (in MythVideo, mplayer
plays video through the PVR-350 and audio through the ES1869).

As noted, I can't loopback audio from the PVR-350 to the ES1869 as there
is no line-in.  I know that audio can be pulled directly over the PCI
bus from bttv cards; I'm wondering if the same can be done with a
PVR-350, and how I would set that up?

I read that MythTV 0.18.1 fixes "live TV audio loss when viewing mpeg2
transport streams."  That sure sounds like my problem, but maybe I've
misconfigured something so that bug fix isn't implemented?  Maybe
Gentoo's MythTV-0.18.1-r1 is configured a certain way and I need to
unmerge it and download and compile directly from the MythTV site?

I have one PCI slot free so I can put another sound card in, but I find
this solution distasteful as I already have a perfectly good (if
incomplete) sound card on the motherboard (which took some effort to set
up, too).  But if I have no choice, I have no choice.

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