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

Carl Eugen Hoyos cehoyos at ag.or.at
Tue Nov 4 19:25:23 CET 2014

 <bluesky <at> caramail.com> writes:

> My computer is connected to my receiver via a 
> S/PDIF (Toslink optical) cable

What does your receiver show when you play with 
MythTV, what does it show for XBMC?
Maybe one is "Dolby Digital" (which is unrelated 
to PLII) and one doesn't show it / shows PLII?

Do you have a switch to change between "Stereo" 
and "PLII": My receiver has such a switch and 
it helps if I reencode the PLII stream to Dolby 
Digital with FFmepg:
$ ffmpeg -i input -ab 640k out.ac3
I can still here the surround via S/PDIF if I 
tell my receiver that this is PLII.

Carl Eugen

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