[FFmpeg-user] r128 usage?

Clément Bœsch ubitux at gmail.com
Fri Oct 5 01:13:37 CEST 2012


On Tue, Oct 02, 2012 at 11:12:58AM +0200, Boštjan Strojan wrote:
> On Tue, Oct 2, 2012 at 8:05 AM, Clément Bœsch <ubitux at gmail.com> wrote:
> 
> > Example: assuming you have I = -12 LUFS, and you want I = -23 LUFS (what
> > you are likely aiming for), -23 - (-12) = -11 LU. So basically, just use
> > -af volume=-11dB and here you go. If you re-run an ebur128 analysis after
> > this operation, you should get I = -23 LUFS.
> 
> a two pass process, right?
> 
> pass one = get the correction value
> pass two = apply
> 

Yes. No real time yet. It would require the filter to inject some metadata
to the next filter who would honor them. Not yet supported.

[...]

-- 
Clément B.
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