diff options
| -rw-r--r-- | doc/filters.texi | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index fd894bcaf1..af7d60ca44 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -26181,8 +26181,8 @@ Set the height of the overlaid video on the main video. Default value is the height of input overlay video. @item alpha -Set blocking detection thresholds. Allowed range is 0.0 to 1.0, it -requires an input video with alpha channel. +Set transparency of overlaid video. Allowed range is 0.0 to 1.0. +Higher value means lower transparency. Default value is @code{0.0}. @end table |