[FFmpeg-cvslog] doc/filters: document new feature

[Paul B Mahol]

ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Mon Oct 14 11:24:38 2019 +0200| [8fec9fca69c22fc41d8602d8bdf547f14c70fc06] | committer: Paul B Mahol

doc/filters: document new feature

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=8fec9fca69c22fc41d8602d8bdf547f14c70fc06
---

 doc/filters.texi | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/doc/filters.texi b/doc/filters.texi
index e7c1090853..8c1482ed1f 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -312,6 +312,15 @@ See @code{ffmpeg -filters} to view which filters have timeline support.
 
 @c man end FILTERGRAPH DESCRIPTION
 
+ at anchor{commands}
+ at chapter Changing options at runtime with a command
+
+Some options can be changed during the operation of the filter using
+a command. These options are marked 'T' on the output of
+ at command{ffmpeg} @option{-h filter=<name of filter>}.
+The name of the command is the name of the option and the argument is
+the new value.
+
 @anchor{framesync}
 @chapter Options for filters with several inputs (framesync)
 @c man begin OPTIONS FOR FILTERS WITH SEVERAL INPUTS