[FFmpeg-devel] Default dynamic range compression on AC3

Wiebe Cazemier wiebe at halfgaar.net
Thu Mar 26 14:26:24 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 ?

I already did in my first post:


> not critical but does someone have a list of titles which sound better
> with one or the other default ?

I will take 'better' as having a higher dynamic range. I always use Terminator 2 as my test DVD, but I have also experienced it with Star Wars 2 (space ship with Amidala blow up scene), U571 and actually a lot more. The meta data is virtually always present, so all you need to have is a title that you know so you have reference material.

> and yes, please post a patch, this also should bump the version number
> and add a note in the Changelog file

Alright, will work on that.

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