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

Mike Brown brown at mrvideo.vidiot.com
Tue Nov 11 14:11:33 CET 2014

On Tue, Nov 11, 2014 at 02:02:28PM +0100, Moritz Barsnick wrote:
> Where I live - Germany - the "minor" stations try to use less bandwidth
> on the satellite transponders / in their bouquets, and transmit only
> one AC-3 audio stream with two channels. Nevertheless, I get quite
> proper surround sound from my sound system during many movies. So my
> conclusion is that they use the PLII "down-mix".

That doesn't make any sense.  AC3 5.1 is usually done at 384 kbps, while
AC3 2.0 is 192 kbps.  The 192 kbps difference is a drop in the bucket
compared to all of the other packets that make up the transponder mux.


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