[mythtv-users] EAC3 passthrough

[sastie at gmail.com]

On Jan 23, 2009 2:17pm, Robert McNamara <robert.mcnamara at gmail.com> wrote:
> On Fri, Jan 23, 2009 at 11:08 AM, sastie at gmail.com> wrote:
>
> > Hi,
>
> >
>
> > I was wondering if anyone managed to get EAC3 tracks to be passed via  
SPDIF
>
> > to a receiver.
>
> > when I play a HDDVD rip, my receiver doesn't see any track and therefore
>
> > doesn't output anything.
>
> > playing AC3 tracks and DTS tracks works fine.
>
> >
>
> > Thanks
>
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> >
>
> >
>
>
>
> You cannot yet pass through any of the HD audio formats yet (and no,
>
> DTS and AC3 don't count). When ffmpeg picks up support for their
>
> bitstreaming, so too will myth. Even when it does, you will never be
>
> able to pass it via SPDIF, there isn't enough bandwidth. Dolby
>
> Digital spec says that "authentic" E-AC3 hardware will be capable of
>
> transcoding to 5.1 AC3 for output on SPDIF, but for proper E-AC3, only
>
> HDMI will do.
>
>
>
> Robert
>
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Thanks for the info Robert,

Given the NVIDIA graphic cards on the market that use a "patch cable" to  
connect to the internal spdif motherboard header in order to provide audio  
over their HDMI port.
Would it be fair to assume that these boards will not be able to provide  
EAC3 over HDMI when the FFMpeg picks up the support.

Sebastien
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