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-rw-r--r--doc/filters.texi6
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diff --git a/doc/filters.texi b/doc/filters.texi
index dbcc86a384..8eff84a0e4 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -111,6 +111,12 @@ Below is a description of the currently available audio filters.
Pass the audio source unchanged to the output.
+@section resample
+Convert the audio sample format, sample rate and channel layout. This filter is
+not meant to be used directly, it is inserted automatically by libavfilter
+whenever conversion is needed. Use the @var{aformat} filter to force a specific
+conversion.
+
@c man end AUDIO FILTERS
@chapter Audio Sources