[mythtv-users] Playing h.264/acc with a Stereo only TV?

[McCormick, Ronald]

On Fri, Jun 4, 2010 at 5:14 AM, Jean-Yves Avenard <jyavenard at gmail.com>wrote:

> Hi
>
> On 3 June 2010 18:45, Matt Goebel <matt at goebelnet.com> wrote:
> > One of my TV's is a couple year old Samsung DLP.  It can't handle 5.1
> audio
> > on the HDMI port (no sound at all) so I'm using stereo.  I have another
> LCD
> > that can, so I have 5.1 setup there.  This hasn't been a problem until I
> > attempted to play an H.264/ACC encoded video... messed up audio on the
> > stereo only TV, LCD TV is fine.  Analog outputs have the same problem.
>  Is
> > there some way in Myth (or at the OS level) to tell it to down convert
> the
> > the audio to stereo without having to transcode?
>
> Wait for 0.24 or run current trunk version of MythTV.
>
> ffmpeg doesn't downmix from 5.1 to stereo AAC content. It only downmix
> AC3 and DTS (and does a poor job with DTS too)..
>
> In 0.24, mythtv will use its own downmixer for decoder not supporting
> those.
>
> JY
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>

Side note: if you used Nero (I can only speak for Nero not other encoding
packages) to make those H.264/AAC files, you will also need to use
--enable-libfaad if you choose to move to trunk. (Just spent the last few
weeks fighting that same setup :-)  Thanks again JY) A fair number of them
dont decode properly with the default FFMPEG.

Pluribus
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