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Diffstat (limited to 'doc')
-rw-r--r-- | doc/filters.texi | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index 4c733f016e..0ee6792926 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -9278,6 +9278,26 @@ Interpolate values using a tetrahedron. @end table @end table +@section lumakey + +Turn certain luma values into transparency. + +The filter accepts the following options: + +@table @option +@item threshold +Set the luma which will be used as base for transparency. +Default value is @code{0}. + +@item tolerance +Set the range of luma values to be keyed out. +Default value is @code{0}. + +@item softness +Set the range of softness. Default value is @code{0}. +Use this to control gradual transition from zero to full transparency. +@end table + @section lut, lutrgb, lutyuv Compute a look-up table for binding each pixel component input value |