vf_interlace: deprecate lowpass option

[platform/upstream/libav.git] / doc / filters.texi

diff --git a/doc/filters.texi b/doc/filters.texi
index 8c83b4e..02f772f 100644 (file)
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -1426,7 +1426,8 @@ a float number which specifies chroma temporal strength, defaults to
 
 Simple interlacing filter from progressive contents. This interleaves upper (or
 lower) lines from odd frames with lower (or upper) lines from even frames,
-halving the frame rate and preserving image height.
+halving the frame rate and preserving image height. A vertical lowpass filter
+is always applied in order to avoid twitter effects and reduce moire patterns.
 
 @example
    Original        Original             New Frame
@@ -1446,10 +1447,6 @@ It accepts the following optional parameters:
 @item scan
 determines whether the interlaced frame is taken from the even (tff - default)
 or odd (bff) lines of the progressive frame.
-
-@item lowpass
-Enable (default) or disable the vertical lowpass filter to avoid twitter
-interlacing and reduce moire patterns.
 @end table
 
 @section lut, lutrgb, lutyuv