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

Carl Eugen Hoyos cehoyos at ag.or.at
Sun Nov 9 21:24:57 CET 2014

Andy Furniss <adf.lists <at> gmail.com> writes:

> > Several developers agree on irc that the extended 
> > ancillary data syntax is typically unused and 
> > cannot be used to detect PLII encoding.
> Fair enough - I was suprised that anyone actually 
> broadcast prologic.

Where I live all movies are broadcast PLII.

> It would be interesting to know if the sample was 
> flagged.

As said, it doesn't help to check the flag because 
it is mostly unused.

> Maybe MythTV just lucked into passing it out as spdif

As said MythTV contains a PLII decoder (filter).

Carl Eugen

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