Hi,
On 02/16/2016 08:58 PM, Robert Jeffares wrote:
there is no reliable automated library leveliser. There may be one but
it may not produce a consistent result across varied source material.
Yes there is. It is called EBU R128, which precise goal is to get levels
consistent between wildly different programs (think feature movie vs
commercial spot and no more jumping on the remote).
This document will be more effective than i am at describing why and how
it works : https://tech.ebu.ch/docs/tech/tech3343.pdf
This is a paradigm shift but it makes so much sense once you go with it,
that one wonders why no one thought of this before.
As for integrating in Rivendell, my humble opinion is that it should be
a per-host (or maybe system wide) option, so as to not disrupt
everyone's workflow : either use peak normalization as before, or the
brand new loudness alignement. This way everyone is happy :)
On a practical basis i think it should work similar to the current peak
normalization on import : analyse file level and adjust to a default
global value (-23 LUFS) (either by destructively changing the level of
the file, or by adjusting cut gain).
I have no idea how technically it could be integrated (if i were a
programmer i would have tried to) but there is at least one open source
linux library for loudness scanning, and the algorithm is publicly
described (see here: https://tech.ebu.ch/docs/tech/tech3342.pdf)
. e
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