vf_pad: center image on padded area if negative x/y

[ffmpeg] / doc / filters.texi

diff --git a/doc/filters.texi b/doc/filters.texi
index bc37e667e0bf437b542aea5f750237cffec00bf9..32720dba419cd6908a430f9d7cee61b934bc159a 100644 (file)
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -10430,6 +10430,9 @@ expression, and vice versa.
 
 The default value of @var{x} and @var{y} is 0.
 
+If @var{x} or @var{y} evaluate to a negative number, they'll be changed
+so the input image is centered on the padded area.
+
 @item color
 Specify the color of the padded area. For the syntax of this option,
 check the "Color" section in the ffmpeg-utils manual.