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doc/libavfilter.texi
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@section unsharp
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Sharpen or blur the input video. It accepts the following parameters:
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@multitable @columnfractions .2 .5 .1 .1 .1
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@headitem Name @tab Description @tab Min @tab Max @tab Default
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@item @var{luma_msize_x}
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@tab Luma matrix horizontal size
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@tab 3
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@tab 13
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@tab 5
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@item @var{luma_msize_y}
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@tab Luma matrix vertical size
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@tab 3
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@tab 13
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@tab 5
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@item @var{luma_amount}
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@tab Luma effect strength
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@tab -2.0
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@tab 5.0
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@tab 1.0
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@item @var{chroma_msize_x}
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@tab Chroma matrix horizontal size
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@tab 3
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@tab 13
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@tab 0
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@item @var{chroma_msize_y}
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@tab Chroma matrix vertical size
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@tab 3
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@tab 13
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@tab 0
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@item @var{chroma_amount}
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@tab Chroma effect strength
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@tab -2.0
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@tab 5.0
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@tab 0.0
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@end multitable
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Sharpen or blur the input video.
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It accepts the following parameters:
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@var{luma_msize_x}:@var{luma_msize_y}:@var{luma_amount}:@var{chroma_msize_x}:@var{chroma_msize_y}:@var{chroma_amount}
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@table @option
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@item luma_msize_x
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Set the luma matrix horizontal size. It can be an integer between 3
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and 13, default value is 5.
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@item luma_msize_y
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Set the luma matrix vertical size. It can be an integer between 3
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and 13, default value is 5.
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@item luma_amount
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Set the luma effect strength. It can be a float number between -2.0
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and 5.0, default value is 1.0.
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@item chroma_msize_x
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Set the chroma matrix horizontal size. It can be an integer between 3
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and 13, default value is 0.
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@item chroma_msize_y
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Set the chroma matrix vertical size. It can be an integer between 3
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and 13, default value is 0.
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@item chroma_amount
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Set the chroma effect strength. It can be a float number between -2.0
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and 5.0, default value is 0.0.
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@end table
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Negative values for the amount will blur the input video, while positive
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values will sharpen. All parameters are optional and default to the

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