[mythtv-users] Myth/spdif no audio, mplayer works fine

[Matthew Phillips]

On 29/03/2005, at 4:59 PM, John Patrick Poet wrote:
> I know this subject has been hashed to death.  I have spent the last 5 
> hours doing searches trying to figure out how to fix it.
>
> I was using an old SoundBlaster Live! card, and everything worked 
> fine.  I just exchanged that card for a M-AUDIO Delta 410.  Configure 
> ALSA to drive it, and tested with aplay and mplayer.  Everything 
> worked beautifully.
>
> Then I tried Myth.  Myth seems to "open" the sound card just fine.  It 
> even seems to write to it just fine:

This probably isn't much help, but I'm seeing the same thing on an EPIA 
M10K box. mplayer (with option "-ac hwdts,hwac3,a52,") can do ac3 from 
a myth-recorded .nuv, but when myth tries it the receiver detects a 
change from PCM 48KHz to DD 2.0, a quick burst of static, and then 
silence. Switching to MP2 audio at least gets me sound.

I'm using ALSA:spdif, and just tried the suggested hw and plughw 
options (eg ALSA:hw:0,16 and ALSA:hw:0,17). These opened OK, but no 
sound at all.

$ cat /proc/asound/devices
   0: [0- 0]: ctl
  17: [0- 1]: digital audio playback
  25: [0- 1]: digital audio capture
  16: [0- 0]: digital audio playback
  24: [0- 0]: digital audio capture
  33:       : timer

Matthew.