[mythtv-users] MythTV 0.24 HDMI audio problem

Steven Adeff adeffs.mythtv at gmail.com
Mon Nov 22 23:58:56 UTC 2010

On Mon, Nov 22, 2010 at 6:58 PM, Steven Adeff <adeffs.mythtv at gmail.com> wrote:
> On Fri, Nov 19, 2010 at 4:00 PM, Jean-Yves Avenard <jyavenard at gmail.com> wrote:
> <snip>
>>> I understand, but in mplayer it works for all four devices no matter
>>> what, which could just be a smart parsing on mplayer's part, or?  yes,
>>> I run mplayer with "-ac hwac3,hwdts,". Actually, I have it in my
>>> ~/.mplayer/config
>> Yeah, I used to configure the audio device for passthrough in a
>> similar fashion than mplayer, but was told that it wasn't the proper
>> way of doing it and it actually failed for some people (personally
>> never had a problem with it and that's the way it was done in 0.23).
>> which version of mplayer a you using? (svn revision that is)
> MPlayer SVN-r1.0~rc3+svn20090426-4.4.3 (C) 2000-2009 MPlayer Team
>>> what's more annoying is that I can't get AC3/DTS passthrough for any
>>> of the devices.
>> I had a talked about this.
>> And depending on the version of ALSA you are using, the device
>> information you should enter in myth is either;
>> 1)With a recent kernel (not sure which version it started from) and a
>> version of ALSA-lib containing this change:
>> http://git.alsa-project.org/?p=alsa-lib.git;a=commitdiff;h=e6d5dcf1f625984605d362338d71162de45a6c60
>> ALSA:hdmi:CARD=YourCardName,DEV=id
>> YourCardName being what's returned by a play -L like: NVidia
>> id: being one of the number device used by the hdmi port
>> Or:
>> 2)Define an alias in ALSA
>> like mythtv_hdmi:CARD=foo,DEV=x that link to
>> intel hda, allowing the use of the extra DEVs when the system alsa-lib
>> doesn't have the above patch..
>> and use ALSA:mythtv_hdmi in the myth audio configuration.
>> Uncheck the advanced audio bit and force of passthrough.
>> I'll get myself a GT220 and see how it goes. Hopefully will find a way
>> to make all of this a bit easier to configure.
> I'll have to play around with this when I have time, which I don't
> right now, and so I'm in no rush at this point since it works =/

I should say, works=Myth decodes AC3/DTS but I get it with LPCM over
HDMI and so it's basically no different and in that sense it works...

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