From 7990df05f72292fd9e4c8a8e5cc04d408610ae31 Mon Sep 17 00:00:00 2001 From: Paul B Mahol Date: Thu, 16 May 2019 10:40:38 +0200 Subject: [PATCH] doc/filters: mention obvious operation, for our always clueless users --- doc/filters.texi | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/doc/filters.texi b/doc/filters.texi index 38c70bf674..1e872e4cf9 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -18231,6 +18231,10 @@ implemented based on the de-interlace algorithm written by Jim Easterbrook for BBC R&D, the Weston 3 field deinterlacing filter uses filter coefficients calculated by BBC R&D. +This filter use field-dominance information in frame to decide which +of each pair of fields to place first in the output. +If it gets it wrong use @ref{setfield} filter before @code{w3fdif} filter. + There are two sets of filter coefficients, so called "simple": and "complex". Which set of filter coefficients is used can be set by passing an optional parameter: