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Diffstat (limited to 'doc')
| -rw-r--r-- | doc/filters.texi | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index c3623dee89..c5cba2aa2d 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -21585,6 +21585,23 @@ sharpen it, a value of zero will disable the effect. Default value is 0.0. +@item alpha_msize_x, ax +Set the alpha matrix horizontal size. It must be an odd integer +between 3 and 23. The default value is 5. + +@item alpha_msize_y, ay +Set the alpha matrix vertical size. It must be an odd integer +between 3 and 23. The default value is 5. + +@item alpha_amount, aa +Set the alpha effect strength. It must be a floating point number, reasonable +values lay between -1.5 and 1.5. + +Negative values will blur the input video, while positive values will +sharpen it, a value of zero will disable the effect. + +Default value is 0.0. + @end table All parameters are optional and default to the equivalent of the |