[mythtv-users] Sound track overwhelmingly the dialog (HD sound)

Matt skd5aner at gmail.com
Thu Oct 11 15:57:17 UTC 2007

On 10/11/07, Michael T. Dean <mtdean at thirdcontact.com> wrote:
> On 10/11/2007 02:58 AM, Jon Boehm wrote:
> > I'm running alsa digital audio out to a 5.1 receiver.  Tonight I
> > recorded Bionic Women in HD off of NBC.  The audio track was Dolby
> > Digital but I couldn't understand 1/2 the scenes because the music sound
> > track volume totally drowned out the dialog.  Has anyone seen this
> > problem before.  ABC was fine but NBC was unwatchable.  The commercials
> > during the Bionic Women were fine but the show it self had problems.
> >
> > I assume this was problem with the feed but I wanted to confirm before
> > calling to complain.
> The important configuration issue, here, is whether you're using AC-3
> passthrough.  If so, the receiver is to blame/must be configured to
> increase center-channel volume.  The /only/ way Myth could be at all to
> blame is if you're not using passthrough.  In that case, Myth is
> decoding the AC-3 and downmixing to 2-channel stereo.
> Mike
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Or... if you're like me and watch things in time stretch (> 1.0x),
then myth will always do the decoding and downmixing to 2-channel
because it can't passthrough a signal to a receiver unless you're
watching it in 1.0x.


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