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authorWerner Robitza <werner.robitza@gmail.com>2017-08-16 13:27:19 +0200
committerLou Logan <lou@lrcd.com>2017-08-17 12:20:26 -0800
commit801ba0f0ee7244f5405764c917a0b6adcbc6fb9e (patch)
tree3eeb9fca99103f6e329a529fc5a3e6fd41b0de24 /doc
parent7160992431b029b31bf407443faeaba86dc755a3 (diff)
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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diff --git a/doc/filters.texi b/doc/filters.texi
index 502ebd5e45..ef0b2ca899 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -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