[FFmpeg-devel] Default dynamic range compression on AC3

Wiebe Cazemier wiebe at halfgaar.net
Thu Mar 26 22:21:20 CET 2015

----- Original Message -----
> From: "Michael Niedermayer" <michaelni at gmx.at>
> To: "FFmpeg development discussions and patches" <ffmpeg-devel at ffmpeg.org>
> Sent: Thursday, 26 March, 2015 12:40:45 PM
> Subject: Re: [FFmpeg-devel] Default dynamic range compression on AC3
> can you provide a sample (short/small one preferred) that "shows" that
> a real world sample sounds better with a changed default ?

Here's the intro from Terminator two:


I don't know how to edit out the start. Just go the end, after Sarah Connor says "it's just a question of which one of them would reach him first". It's the same bit as those screenshots and PCM captures I posted.

play with:

mplayer --a52drc=0 t2-intro.ac3
mplayer --a52drc=1 t2-intro.ac3 

drc=1 is also the default in mplayer, probably because it uses ffmpeg or libav.

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