how to filter video in 16bit and dither?

[ChaosKing]

Originally Posted by Boulder

It would be better to feed the encoder with 16-bit data and let it dither down to the final bitdepth. From what I remember, x265 will internally work in 16 bits anyway.

Thats good to know

Originally Posted by gugglu

s_str     = 1.2
s_reverse = s_str + 0.25
s_divisor = 1.5
s_indexr  = 1.281
sstring   = 'x 128 - abs '+'{s_divisor}'+' / 1 '+'{s_indexr}'+' / ^ '+'{s_str}'+' * x 128 - x 128 - abs 0.001 + / * x 128 - 2 ^ x 128 - 2 ^ '+'{s_reverse}'+' + / * 128 +'

mt_lut(sstring, U=1, V=1)

Sorry can't help you with Expr()
But maybe this can help: https://github.com/darealshinji/vapo...o_alpha.py#L33
https://github.com/darealshinji/vapo...edarken.py#L19

[WolframRhodium]

Originally Posted by gugglu

Can someone please convert this lut formula for noise into Vapoursynth Format, bunch of thanks C.K 'and' Boulder

Code1:
s_str     = 1.2
s_reverse = s_str + 0.25
s_divisor = 1.5
s_indexR  = 1.281
sstring   = "x 128 - abs "+String(s_divisor)+" / 1 "+String(s_indexR)+" / ^ "+String(s_str)+" * x 128 - x 128 - abs 0.001 + / * x 128 - 2 ^ x 128 - 2 ^ "+String(s_reverse)+" + / * 128 +"
mt_lut(sstring, U=1, V=1)

code 2:
mt_lutxy(clip1, clip2, "x 128 - abs y 128 - abs < x y ?", U=1, V=1)

code 3:
mt_lutxy(clip1, clip2, "x y != 255 0 ?", U=1, V=1)

.

Code1:
s_str     = 1.2
s_reverse = s_str + 0.25
s_divisor = 1.5
s_indexR  = 1.281
sstring   = f"x 128 - abs {s_divisor} / {1 / s_indexR} pow {s_str} * x 128 - dup abs 0.001 + / * x 128 - 2 pow dup {s_reverse} + / * 128 +"
last = core.std.Expr(last, sstring if last.format.color_family == vs.GRAY else [sstring, ""])

code 2:
sstring = "x 128 - abs y 128 - abs < x y ?"
last = core.std.Expr([clip1, clip2], sstring if clip1.format.color_family == vs.GRAY else [sstring, ""])

code 3:
sstring = "x y = 0 255 ?"
last = core.std.Expr([clip1, clip2], sstring if clip1.format.color_family == vs.GRAY else [sstring, ""])

[gugglu]

Originally Posted by ChaosKing

Sorry can't help you with Expr()
But maybe this can help: https://github.com/darealshinji/vapo...o_alpha.py#L33
https://github.com/darealshinji/vapo...edarken.py#L19

Hi C.K thats alright sarge thanks anyway, tho I really appreciated all your help from the beginning. :respect:

Originally Posted by WolframRhodium

Code1:
s_str     = 1.2
s_reverse = s_str + 0.25
s_divisor = 1.5
s_indexR  = 1.281
sstring   = f"x 128 - abs {s_divisor} / {1 / s_indexR} pow {s_str} * x 128 - dup abs 0.001 + / * x 128 - 2 pow dup {s_reverse} + / * 128 +"
last = core.std.Expr(last, sstring if last.format.color_family == vs.GRAY else [sstring, ""])

code 2:
sstring = "x 128 - abs y 128 - abs < x y ?"
last = core.std.Expr([clip1, clip2], sstring if clip1.format.color_family == vs.GRAY else [sstring, ""])

code 3:
sstring = "x y = 0 255 ?"
last = core.std.Expr([clip1, clip2], sstring if clip1.format.color_family == vs.GRAY else [sstring, ""])

Awesome WolframRhodium, thanks for your visit. that formula looks great will give it go soon as i get some time to get on my computer, really Doom9 is full of great intelligent guys and i am glad to be part of it .