[mythtv-users] Audio not working via coax/spdif
Mir Islam
mislam at mirislam.com
Sun Jun 29 21:43:52 UTC 2008
Hi just got a new sound card Diamond extreme with coax output. The sound
is working fine outside of MythTV in regular desktop but not in MythTV.
In MythTV I have audio setup as following:
Audio Output Device: ALSA:spdif
Passthrough: ALSA:IEC958{AES0 0x02}
Max Audio Channels: 5.1 Upmix: Passive
Enable AC3/DTS to SPDIF passthrough checked
But no sound comes out of my AV receiver. I can start mplayer and play
DVD or recorded programs from hard disk fine and AV receiver correctly
identifies number of channels etc. In MythFrontend log I see this error:
2008-06-29 14:33:54.596 AFD: Opened codec 0x138f550, id(MPEG2VIDEO)
type(Video)
2008-06-29 14:33:54.596 AFD: codec AC3 has 2 channels
2008-06-29 14:33:54.597 AFD: Opened codec 0x13d3150, id(AC3) type(Audio)
2008-06-29 14:33:54.599 Opening audio device 'spdif'. ch 6(2) sr 48000
2008-06-29 14:33:54.599 Opening ALSA audio device 'iec958:{ AES0 0x02 }'.
2008-06-29 14:33:54.698 AudioOutput Error: Channels count (6) not
available: Invalid argument
2008-06-29 14:33:54.698 AudioOutput Error: Unable to set ALSA parameters
2008-06-29 14:33:54.698 NVP: Disabling Audio, reason is: Unable to set
ALSA parameters
Some other info:
In mplayer config I have ac=hwac3.
mislam at neptune:~$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: CMI8768 [C-Media CMI8768], device 0: CMI8738-MC8 [C-Media PCI
DAC/ADC]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: CMI8768 [C-Media CMI8768], device 1: CMI8738-MC8 [C-Media PCI
2nd DAC]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: CMI8768 [C-Media CMI8768], device 2: CMI8738-MC8 [C-Media PCI
IEC958]
Subdevices: 1/1
Subdevice #0: subdevice #0
Thanks
Mir
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