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

[Carl Eugen Hoyos]

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

> Carl Eugen Hoyos wrote:

This is missing the following:

> > > Don't worry about MPEG-2 Multichannel, your sample
> > > is certainly Dolby PLII.

> > I severely doubt that it was formalized for DVB.

(it == MPEG-2 Multichannel)

> > You can check the bitrate to be sure: I would expect
> > that 256k are not enough for Multichannel.
> 
>
http://www.etsi.org/deliver/etsi_ts/101100_101199/101154/01.11.01_60/ts_101154v011101p.pdf

Yes, MPEG-2 Multichannel was probably never formalized 
for DVB, Dolby PLII certainly was.

And it is apparently possibly to detect it;-)
(I did not yet test if the flag is really set 
correctly.)

Carl Eugen