[mythtv-users] stereo+AC3/DTS sound to both analog+digital outputs

[Steve V]

----- Original Message ----
> From: Allen Edwards <allen.p.edwards at gmail.com>
> To: Discussion about mythtv <mythtv-users at mythtv.org>
> Sent: Friday, 31 July, 2009 6:28:35 AM
> Subject: Re: [mythtv-users] stereo+AC3/DTS sound to both analog+digital outputs
> 
> 2009/7/30 Michael T. Dean :
> > On 07/30/2009 10:19 AM, Petr Stehlik wrote:
> >>
> >> Allen Edwards píše v Čt 30. 07. 2009 v 07:12 -0700:
> >>>
> >>> asound.conf:
> >>>
> >>> pcm.!default {
> >>> type hw
> >>> card 0
> >>> device 0
> >>> }
> >>
> >> I don't remember having any default asound.conf (it might be hidden
> >> somewhere in /usr/share/alsa/something). As for .asoundrc I explained
> >> that situation in my original email.
> >
> > The above re-definition of the default audio device will break any non-48kHz
> > audio playback.  Either delete your /etc/asound.conf (using the ALSA
> > defaults) or do it properly.
> >
> > Mike
> > _______________________________________________
> > mythtv-users mailing list
> > mythtv-users at mythtv.org
> > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> >
> 
> So what was Steve getting at?  I know Petr's setup will not work so
> don' t need to know that.  Remember, the goal here is to get analog
> and digital at the same time.  Petr wants to drive a TV and a 5.1
> system.  Steve alluded to some setup and I thought I replicated what
> he was saying.  I wanted to know if I understood what he was saying
> before taking the time to try it.  Personally, I have worked this
> issue a lot and don't think it can be done but would love to be shown
> wrong.
> 
> By the way, Pert, if I misunderstood and you just want to drive two
> spdif systems, most MBs have a second spdif connector and I have
> posted an interface to make that work previously.
> 
> Allen

the issue I have is.

Normal mode, I want sound out on HDMI but without AC3 passthrough to HDMI. This is because my TV cannot handle AC3.

Movie Mode, I want sound out on SPDIF with AC3 passthrough to SPDIF.

I can get part of what I want by setting the default sound device to HDMI and setting AC3 passthrough to SPDIF, this works for many situations as non AC3 tracks are played through my TV speakers and AC3 goes to my receiver. However I have 1 TV station that has both an AC3 and an AAC track, the AC3 track is the default, so when I watch this station (or a recordign from this station) I either have to change the audio track or turn on the reciever.

For the staion with the AC3 track I find that if I have no passthrough checked, sound plays through the TV fine.

So it seems to me that what I need is a simple way to check and uncheck passthrough, without having to go into setup.