[FFmpeg-devel] One pass volume normalization (ebur128)

Roger Pack rogerdpack2 at gmail.com
Thu Jun 5 21:32:32 CEST 2014

On 7/18/13, Nicolas George <nicolas.george at normalesup.org> wrote:
> Le nonidi 29 messidor, an CCXXI, Jan Ehrhardt a écrit :
>> Strange. First you steer me in the direction of volumedetect and now it
>> seems the other way around.
> I will explain one last time: using the intermediate value of r128.I or its
> equivalent from volumedetect for volume normalization is WRONG. I do not
> want to help doing something wrong, nor will I support adding a feature in
> ffmpeg whose main use is to do something wrong. I also believe that it
> would
> have been better if Clément did not expose the intermediate value of
> r128.I,
> only its final value.
> The RIGHT way of doing normalization is to use either a smoothed immediate
> value or the final value with two passes. The first pass would cost almost
> nothing if correctly implemented.

So am I correct that there is no smoothed intermediate value available
as of today?  One liners are just sexy if it were possible to do
volume normalization on the fly  :)

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