[FFmpeg-devel] [PATCH] doc/filters: document rand() drawtext expression function

Stefano Sabatini stefasab at gmail.com
Tue May 1 13:30:01 CEST 2012

 doc/filters.texi |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/doc/filters.texi b/doc/filters.texi
index ec4eb5e..c529f00 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -1364,11 +1364,11 @@ output image.
 The default value of @var{x} and @var{y} is "0".
-See below for the list of accepted constants.
+See below for the list of accepted constants and functions.
 @end table
 The parameters for @var{x} and @var{y} are expressions containing the
-following constants:
+following constants and functions:
 @table @option
 @item dar
@@ -1412,6 +1412,9 @@ contained in the rendered text
 @item n
 the number of input frame, starting from 0
+ at item rand(min, max)
+return a random number included between @var{min} and @var{max}
 @item sar
 input sample aspect ratio

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