[mythtv-users] AC3 passthrough

[Michael T. Dean]

On 06/12/2006 01:12 PM, ldc online wrote:
> I am trying to get ac3 pass thru to to work on my new mythtv box that
> I setup over the weekend. In the setup screens, I enabled AC3 pass
> through, but when I watch a DVD straight from a disc, I only get two
> channel.  I have also tried using XINE instread of mplayer, but when I
> set that speaker arrangment settings to pass through and
> restart xine, I get an Audio Device is Unavailable error.  Clicking on
> more in XINE, I
> see the following possibly relevant messages:
> Audio_decoder: error: unknown buffer type: 01060000
> Audio_decoder: error: unknown buffer type: 04000000
> Audio_decoder: error: unknown buffer type: 02990000

What do you have specified for the audio.device.alsa_passthrough_device 
in ~/.xine/config?

# device used for 5.1-channel output
# string, default: iec958:AES0=0x6,AES1=0x82,AES2=0x0,AES3=0x2
#audio.device.alsa_passthrough_device:iec958:AES0=0x6,AES1=0x82,AES2=0x0,AES3=0x2

If the same as the above (or with the bottom line uncommented), try just 
plain "iec958" instead.

Mike