[mythtv-users] Just getting started

Nick knowledgejunkie at gmail.com
Tue May 3 18:35:39 UTC 2005


On 5/3/05, Pane, Chris <cpane at vanteon.com> wrote:
>  
>  
> 
> I am in the process of putting together a mythTV box. 
> 
>   
> 
> I want to use a PVR350 for MPEG Decode when I playback Movies (MPEG 3). I
> also want to preserver the AC3 encoded soundtrack (DTS/Dolby Digital), and
> pass it through to my Receiver (For Decode). 
> 
>   
> 
> From what I have figured out so far, I need to split the MPEG 2 Stream
> first, before it gets to the MPEG Decode on the PVR 350, then route that
> stream to the onboard digital audio out on my motherboard. 
> 
>   
> 
> My question is, does myth support this? If so, any tips as to where to start
> to get this to work. I am not interested in the audio out on the PVR 350
> (Since it is only 2 channels). 

Chris,

I think the only way to have this work (not sure though completely,
kind of a hunch) would be to use mplayer configured with ivtv output
support. This way maybe you can decode the video through the 350, and
still be able to send the audio to the SPDIF for AC3 decoding
externally.

As far as I can tell, mythtv itself, or the ivtv driver, cannot split
the streams and have one go to the 350 and the other to the soundcard.
Enabling 350 output in mythtv itself is purely for livetv and playback
of material and not for the other components like mythvideo. I think
the initial Hauppauge raison d'etre of the 350 is to decode the mpeg2
video/2-ch audio it encodes with its on-board encoder (but it also
works well with UK DVB-T which does not have 2ch audio). Having it
work in these other ways is not something supported as yet AFAIK.

Nick


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