Kieran Kunhya in gmane.comp.video.ffmpeg.devel (Sun, 14 Jul 2013 00:07:02 +0100):
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.
If the next advert is prerecorded, you can apply separate loudness rules on it.
R128 refers to programme loudness.
I believe you. But aren't there loudness recommendations for live steams of popconcerts, the Bayreuther Festspiele or the like? Jan