[mythtv-users] stereo and 5.1?

[David Knight]

On Fri, January 7, 2011 6:12 pm, mike wrote:
> On Sun, 2 Jan 2011 13:34:51 +1100
> Jean-Yves Avenard <jyavenard at gmail.com> wrote:
>
>> On 2 January 2011 04:55, Jack Lockard <jacklockard at gmail.com> wrote:
>> > I have S/PDIF optical cable running to my 5.1 receiver.
>> > I have a 3.5mm-to-RCA cable running to my TV.
>> > Is there a way to get these outputs both active at the same time?
>> > Normally, I'd like to watch mythtv with just my TV speakers and my
>> > receiver off.  But if it's a movie, I'd prefer to get the 5.1 by
>> > muting my TV and turning on the receiver.
>>
>> set your main audio device for the analog output
>> and enable in Advanced Audio Settings , passthrough override and use
>> ALSA:iec958:AES0=6
>>
>> Set your audio speakers to 5.1 and disable the upmixer (otherwise all
>> stereo audio will be sent a 5.1 AC3)
>>
> Is ALSA:iec958:AES0=6 only available with trunk? On 0.24-fixes i get
> ALSA:iec958:AES0=2, so only get stereo out.

I originally asked about this scenario several weeks ago and since it
seems to have been brought up by several other mythtv users.

I have played again with it this morning using fixes/0.24 and found it
still does not function as described above.

Audio is passed through to the receiver but the original DD/DTS signal is
NOT passed through (it appears to be decoded by MythTV).

Also after navigating back to audio setup options speaker configuration
has reset to Stereo instead of 5.1 (probably because my analog output
device is only stereo).

Regards

Dave K.