[mythtv-users] Working AC3 passthrough

[Michael T. Dean]

On 08/26/2007 01:10 PM, Johan Heikkilä wrote:
> Thanks to the archive of this great mailing list, I finally got AC3
> pass through working. I've been running MythTV for a couple of years
> now, but never figured out how to get AC3 pass through working with
> the Internal player (DVB-C and DVD) to SPDIF. I didn't care much,
> because Mplayer and Xine have worked just fine (my sound card is an
> internal Terratech Aureon 5.1 PCI).
>
> Almost by coincidence, I wanted to try to use the Internal player
> (I've been running SVN for a long time) and I found out that I had to
> set the pass through device to:
>
> ALSA:iec958:AES0=0x06,AES1=0x82,AES2=0x00,AES3=0x02
>
> OK, it is not perfect. When using time stretch, my external amp looses
> some of the channels (the AC3 indication goes off). But you can't have
> everything...

#1104 allows re-encoding to AC-3.

Mike