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Diffstat (limited to 'doc/filters.texi')
| -rw-r--r-- | doc/filters.texi | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index a7919a3506..c5caa77d99 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -5454,8 +5454,7 @@ Swap luma/chroma/alpha fields. Exchange even & odd lines. Default value is @code 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. A vertical lowpass filter -is always applied in order to avoid twitter effects and reduce moiré patterns. +halving the frame rate and preserving image height. @example Original Original New Frame @@ -5475,6 +5474,10 @@ It accepts the following optional parameters: @item scan This 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 kerndeint |