[FFmpeg-cvslog] doc/filters: add missing details to aphasemeter

[Gyan Doshi]

ffmpeg | branch: master | Gyan Doshi <ffmpeg at gyani.pro> | Mon Jul 16 11:38:22 2018 +0530| [b8c4d2b2ed22b29a5366f75eaef2ae3be3c78412] | committer: Gyan Doshi

doc/filters: add missing details to aphasemeter

First output is audio and is rematrixed to stereo

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=b8c4d2b2ed22b29a5366f75eaef2ae3be3c78412
---

 doc/filters.texi | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/doc/filters.texi b/doc/filters.texi
index 9d8f88ddcf..705d48e1b0 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
- at code{1} means channels are in phase.
-
 @section avectorscope
 
 Convert input audio to a video output, representing the audio vector