[mythtv-users] Record AC3 from Satellite SPDIF In Help

[Michael T. Dean]

On 05/26/2006 02:42 PM, stan wrote:
> I'm very interested in this too.  I have a PVR-350 which I think has the
> same inputs as the PVR-250.
>
> I feed the PVR-350 with two different inputs:  Rooftop antenna and Dish
> satellite set top box.
>
> The roof antenna goes to the rf-in on the PVR-350.
>
> The satellite box goes to both the s-video and analog sound inputs on the
> PVR-350.  I think the PVR-350 loops the analog signal back to the PVR-350's
> audio output which I connect to the mobo analog sound line-in.
>
> The satellite box also has spdif output that I'd like to use instead of it's
> analog sound output, but I need to retain the ability of capturing the
> analog sound from the RF input.
>
> I don't know what to ask about in terms of mythTV capabilities because I
> don't know how the PVR-350 is basically working:
>
> 1.  (1A) Does the PVR-350 hardware encode both the audio and video from the
> RF signal
...
> 1A.  RF-in  ->  PVR-350 -> audio and video mpeg
>   
Yes.
> 2.  (2A) Does the PVR-350 hardware encode the s-video input mixed with the
> analog sound input
...
> 2A.  S-video-in + analog audio in -> PVR-350 -> audio and video mpeg
>   
Yes.
> I think we need to know how the above stuff is working before we know what's
> needed to use spdif rather than analog sound input.

Basically, the hardware doesn't support recording from a digital input, 
so you would have to record video and analog audio into an MPEG with the 
PVR-x50 and record AC-3 some other way.  Then, you would have to mux the 
AC-3 stream into the existing MPEG file--while maintaining sync.

This is exactly why the first responder said the problem is maintaining 
sync.

Mike