[FFmpeg-cvslog] avfilter: document mono option of silencedetect filter

[Paul B Mahol]

ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Sun Sep 23 23:10:51 2018 +0200| [a9485d7318d1354acc29006794ffcb85f7c3d6d6] | committer: Paul B Mahol

avfilter: document mono option of silencedetect filter

Also provide shorter option, and reorder options in documentation.

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=a9485d7318d1354acc29006794ffcb85f7c3d6d6
---

 doc/filters.texi               | 9 ++++++---
 libavfilter/af_silencedetect.c | 3 ++-
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/doc/filters.texi b/doc/filters.texi
index 73de0fbea7..5ee2bb52ec 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -4171,12 +4171,15 @@ The printed times and duration are expressed in seconds.
 The filter accepts the following options:
 
 @table @option
- at item duration, d
-Set silence duration until notification (default is 2 seconds).
-
 @item noise, n
 Set noise tolerance. Can be specified in dB (in case "dB" is appended to the
 specified value) or amplitude ratio. Default is -60dB, or 0.001.
+
+ at item duration, d
+Set silence duration until notification (default is 2 seconds).
+
+ at item mono, m
+Process each channel separately, instead of combined. By default is disabled.
 @end table
 
 @subsection Examples
diff --git a/libavfilter/af_silencedetect.c b/libavfilter/af_silencedetect.c
index d9582aa589..3a71f3902a 100644
--- a/libavfilter/af_silencedetect.c
+++ b/libavfilter/af_silencedetect.c
@@ -57,7 +57,8 @@ static const AVOption silencedetect_options[] = {
     { "noise",     "set noise tolerance",              OFFSET(noise),     AV_OPT_TYPE_DOUBLE, {.dbl=0.001},          0, DBL_MAX,  FLAGS },
     { "d",         "set minimum duration in seconds",  OFFSET(duration),  AV_OPT_TYPE_DOUBLE, {.dbl=2.},             0, 24*60*60, FLAGS },
     { "duration",  "set minimum duration in seconds",  OFFSET(duration),  AV_OPT_TYPE_DOUBLE, {.dbl=2.},             0, 24*60*60, FLAGS },
-    { "mono",      "check each channel separately",    OFFSET(mono),      AV_OPT_TYPE_BOOL,   {.i64=0.},             0, 1, FLAGS },
+    { "mono",      "check each channel separately",    OFFSET(mono),      AV_OPT_TYPE_BOOL,   {.i64=0.},             0, 1,        FLAGS },
+    { "m",         "check each channel separately",    OFFSET(mono),      AV_OPT_TYPE_BOOL,   {.i64=0.},             0, 1,        FLAGS },
     { NULL }
 };