[FFmpeg-user] How can I convert mpeg2 5.1 audio to ac3?

[Carl Eugen Hoyos]

 <bluesky <at> caramail.com> writes:

> "Carl Eugen Hoyos" <cehoyos <at> ag.or.at> wrote:
> 
> >> My computer is connected to my receiver via a
> >> S/PDIF (Toslink optical) cable
> 
> > What does your receiver show
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

I know (expected) that MythTV and XBMC do not show 
PLII. My receiver has a display and when digital 
audio (as via S/PDIF) starts, it shows something 
on this display.
While playing, I can switch the "Input mode" to 
change between "Stereo" and "PLII".

> My receiver has options for THX, Dolby/DTS 
> Surround, Stereo, and Direct.  

PLII is (the successor of) Dolby Surround afaict.
Since Dolby Surround and DTS Surround are two 
completely different things afaik, I am 
surprised that this is the same option...

I would be surprised if the file is THX but I 
don't know much about it, my receiver does not 
support it (too cheap).
(From a very quick look, THX is unrelated: 
"A common error is that THX is similar to 
Dolby Surround.")

Carl Eugen