On Friday 13 October 2006 15:10, Francisco Gutierrez wrote:
> Hi list!
>
> First of all, thanks for your help and also sorry for my english....
>
> Here is my problem.
>
> I'm trying to build a home made encoder for a digital headend.
>
> I'm using a Hauppauge PVR 250 and vlc for this. I connect a RF cable
> to the card and then stream the signal to a multicast network. The
> video works fine, in fact, works great. But the audio doesn't work
> when i'm watching the TV (a real TV). Let me explain a little bit the
> model of the network!
>
> RF cable -> Home-made-Encoder -> Switch -> DCM (modulator of
> Scientific Atlanta) -> Switch -> Qam modulator -> Set Top Box ->
> TV!!!
>
> If i connect a laptop to the first switch and catch the multicast
> with vlc everythings works fine....
> Also if i connect the latop to the second switch, everything works
> fine!! (This is another multicast, it is send by the DCM with all
> others channels)
>
> But... in the last step, the sound don't work fine :( i get sound,
> but it is like a cut sound.. Bip Bip Bip...
>
> I think the solution it is that the PVR send audio in mpeg1 layer 2 @
> 192 Kbps and samplerate 48000...
> I'm trying to do this with ivtvctl but i can't make it work....
> please if someone can help me with this.....
>
> Well, thanks a lot!!!
I'm not sure what you want. The PVR encodes the audio by default at 48
kHz. It can be changed to 32 or 44.1 kHz using ivtvctl. It's not very
intuitive but you can select 44.1 kHz as follows:
ivtvctl -c audio=0xe8
Value 0xe9 is 48 kHz and 0xea is 32 kHz.
Hope this helps,
Hans
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