Sharpen or blur the input video.

This filter accepts parameters as a list of key=value pairs, separated by ":".

If the key of the first options is omitted, the arguments are interpreted according to the syntax: luma_msize_x:luma_msize_y:luma_amount:chroma_msize_x:chroma_msize_y:chroma_amount

A description of the accepted options follows.

luma_msize_x, lx, chroma_msize_x, cx

Set the luma/chroma matrix horizontal size. It must be an odd integer between 3 and 63, default value is 5.

luma_msize_y, ly, chroma_msize_y, cy

Set the luma/chroma matrix vertical size. It must be an odd integer between 3 and 63, default value is 5.

luma_amount, la, chroma_amount, ca

Set the luma/chroma effect strength. It can be a float 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 1.0 for luma_amount, 0.0 for chroma_amount.