From b8c4d2b2ed22b29a5366f75eaef2ae3be3c78412 Mon Sep 17 00:00:00 2001
From: Gyan Doshi <ffmpeg@gyani.pro>
Date: Mon, 16 Jul 2018 11:20:22 +0530
Subject: [PATCH] doc/filters: add missing details to aphasemeter
First output is audio and is rematrixed to stereo
---
doc/filters.texi | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)
diff --git a/doc/filters.texi b/doc/filters.texi
index 9d8f88ddcf8..705d48e1b01 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -18435,9 +18435,15 @@ Default is @code{replace}.
@section aphasemeter
-Convert input audio to a video output, displaying the audio phase.
+Measures phase of input audio, which is exported as metadata @code{lavfi.aphasemeter.phase},
+representing mean phase of current audio frame. A video output can also be produced and is
+enabled by default. The audio is passed through as first output.
-The filter accepts the following options:
+Audio will be rematrixed to stereo if it has a different channel layout. Phase value is in
+range @code{[-1, 1]} where @code{-1} means left and right channels are completely out of phase
+and @code{1} means channels are in phase.
+
+The filter accepts the following options, all related to its video output:
@table @option
@item rate, r
@@ -18463,11 +18469,6 @@ Set color which will be used for drawing median phase. If color is
Enable video output. Default is enabled.
@end table
-The filter also exports the frame metadata @code{lavfi.aphasemeter.phase} which
-represents mean phase of current audio frame. Value is in range @code{[-1, 1]}.
-The @code{-1} means left and right channels are completely out of phase and
-@code{1} means channels are in phase.
-
@section avectorscope
Convert input audio to a video output, representing the audio vector
--
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