OptionallxOptionallyLuma matrix vertical size, odd 3–23. Default: 5
OptionallaLuma effect strength, -1.5 to 1.5. Default: 1.0 (sharpen)
OptionalcxChroma horizontal size
OptionalcyChroma vertical size
OptionalcaChroma effect strength
OptionalaxAlpha horizontal size
OptionalayAlpha vertical size
OptionalaaAlpha effect strength
Luma matrix horizontal size, odd 3–23. Default: 5