[mythtv-users] Xine & alsa.spdif + passtrough

Pete pete at putzin.net
Mon Nov 29 02:05:04 UTC 2004

On Sunday 28 November 2004 02:31 pm, Tomi Makinen wrote:
> Hi,
> I have been reading atleast most of the posts about alsa and spdif.
> I am using FC1 with jarods guide, but I have lost my DD & DTS sounds.
> Is the xine that comes with apt-get compiled with alsa support ?
> What happens always is that, I get strange sounds from analog output
> when I try to use passthrough mode. I have intel 865 mobo and I use its
> soundcard. If I use the digitalsound howto and use the long .asoundrc I get
> all the sounds from spdif, but it is always mixed to 2 channels. Atleast
> my amp shows that it is PCM and prologic is used.
> Anyone got ideas how to configure Xine to give DVD sounds to spdif ?
> I would like that all the sounds would come from spdif, but it is not a
> must thing.
> - McIne -

From a reply given to me regarding something similar. Look for the subject 
Alsa Sound Out

> No. You have to check the box for "enable AC3 passthrough" in mythfrontend 
> MythTV to pass AC3. Both mplayer and xine (and Ogle, I presume) have to be 
> configured independently to pass raw AC3.
> My ~/.mplayer/config file has this in it:
> ac=hwac3,
> The comma says "fall back to whatever is auto-detected, if not AC3".
> For xine, I've got these in ~/.xine/config:
> audio.speaker_arrangement:Pass Through
> audio.alsa_a52_device:spdif
> I believe both of those were actually set using the Xine configuration UI.
>(Yes, to those who might be wondering, I'm finally adding xine info to my 

This should help you out. 
"Wherever the standard of freedom and independence has been or shall be 
unfurled, there will her heart, her benedictions, and her prayers be. But she 
goes not abroad in search of monsters to destroy." - John Qunicy Adams

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