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-rw-r--r--doc/filters.texi8
1 files changed, 4 insertions, 4 deletions
diff --git a/doc/filters.texi b/doc/filters.texi
index d236bd69b7..49895ff947 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -5645,10 +5645,10 @@ the width and height of currently filtered plane
@item SW
@item SH
-Width and height scale depending on the currently filtered plane. It is the
-ratio between the corresponding luma plane number of pixels and the current
-plane ones. E.g. for YUV4:2:0 the values are @code{1,1} for the luma plane, and
-@code{0.5,0.5} for chroma planes.
+Width and height scale for the plane being filtered. It is the
+ratio between the dimensions of the current plane to the luma plane,
+e.g. for a @code{yuv420p} frame, the values are @code{1,1} for
+the luma plane and @code{0.5,0.5} for the chroma planes.
@item T
Time of the current frame, expressed in seconds.