Doom9's Forum - View Single Post - is there a function to ADD two clips (blend)

scharfis_brain · 2nd November 2003, 14:38

LOL!

Code:

layer(r,g,"fast").layer(b,"add",85).rgbadjust(3,3,3,1)

this was my first attempt when writing this script.
the only difference was that I used levels(0,1,85,0,255) instead of rgbadjust(3,3,3,1).

But your solution has the same problem: quantisation reduction by 3! you'll end up with only 85 greyscale-steps out of 255 possible.

That's, why I am using a invertion with levels and then the subtract-function. I never had artifacts using it this way. But a pure add(clip,clip) - function would be much better

2nd November 2003, 14:38	#7 \| Link
scharfis_brain brainless Join Date: Mar 2003 Location: Germany Posts: 3,653	LOL! Code: layer(r,g,"fast").layer(b,"add",85).rgbadjust(3,3,3,1) this was my first attempt when writing this script. the only difference was that I used levels(0,1,85,0,255) instead of rgbadjust(3,3,3,1). But your solution has the same problem: quantisation reduction by 3! you'll end up with only 85 greyscale-steps out of 255 possible. That's, why I am using a invertion with levels and then the subtract-function. I never had artifacts using it this way. But a pure add(clip,clip) - function would be much better