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filters.texi: explain audio upsampling in loudnorm 

Explain that audio will be upsampled to 192 kHz. Addresses issues mentioned in
issue 6570.

Signed-off-by: Werner Robitza <werner.robitza@gmail.com>
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Werner Robitza 2017-08-16 13:27:19 +02:00 committed by Lou Logan
parent 7160992431
commit 801ba0f0ee
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@ -3070,6 +3070,10 @@ EBU R128 loudness normalization. Includes both dynamic and linear normalization
Support for both single pass (livestreams, files) and double pass (files) modes.
This algorithm can target IL, LRA, and maximum true peak.
To accurately detect true peaks, the audio stream will be upsampled to 192 kHz.
Use the @code{-ar} option or @code{aresample} filter to set a different output
sample rate.
The filter accepts the following options:
@table @option