[FFmpeg-devel] [PATCH v2 1/2] doc/filters: correct description of overlay_vaapi

[Fei Wang]

Signed-off-by: Fei Wang <fei.w.wang at intel.com>
---
update:
1. refine commit message and content in doc file.

 doc/filters.texi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/doc/filters.texi b/doc/filters.texi
index 4a5412c91d..a66b750d57 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -26168,8 +26168,8 @@ 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
-- 
2.25.1