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

Kieran Kunhya kierank at obe.tv
Sun Jul 14 01:07:02 CEST 2013


> There are some situations where you cannot do a dual pass. For instance,
> if you are live broadcasting a symphony with a grand finale, there is no
> hardware or software solution possible that produces a fully EBU R128
> compliant loudness. Something like my patch must be close enough. After
> all, EBU R128 is only a recommendation.

EBU R128 specifically does not address any realtime paradigm for the
simple reason:
Say you have film credits, the normaliser thinks it's too quiet. The
next advert is then boosted.

R128 refers to programme loudness.


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