[linux-dvb] Re: AC3 over DVB

[Christophe Thommeret <hftom@free.fr>]

Le Mardi 8 Juin 2004 16:06, Hamish Moffatt a écrit :
> Hi,
>
> This question is probably off-topic, for which I apologise. However, I
> wonder if anyone can help me with getting AC3 sound over DVB-T?
> I want to pass it out to S/PDIF, not decode it in software.
>
> It seems that Xine can do AC3 passthrough over S/PDIF, though I never
> got any sound out when I tried it. I get stereo sound (PCM) over S/PDIF
> ok. I suspect that its AC3 stuff has been only tested with DVD.
>
> MPlayer can supposedly do it too. I tried it, but it segfaults almost
> immediately on the station with AC3 sound. (I just put the AC3 PID in
> place of the audio PID in channels.conf.) Once it got as far as the amp
> detecting "Dolby Digital 2/0", then crashed, but never again.
>
> It seems like MythTV should also do it, but I've had even less luck with
> that, so I thought I'd get Xine or MPlayer working firt.
>
> From my Googling, it seems that AC3 is carried differently on DVB versus
> ATSC. I wonder how it is carried on DVD? I wonder if Xine can only do
> ATSC (or DVD), and not DVB..

Yes, xine can play dvb ac3, but can't autodetect it.
So you have to pass it special PAT and PMT.
This is what KaxTV does, succesfully. (google for it)

-- 
Christophe Thommeret