I'm not native english so i hope you will understand what i will mean.
I'm having a problem with masks, the thing is that it automatically draw small grey lines and when I increase the feather of this one, this grey line grow up like there's a solid inside this mask.
It's not really a problem for a lot of case but I want to create shockwave from video copilot without buying the dvd and i have to use a fractal noise with a keyframed mask's position and then decrease the brightness of the fractal to hide it, but there I see these small line from the mask!
some photos with 1600% zoom and without :
base (so you can see what i trying to do) :
1600% zoom without yellow mask lines (the grey line on the center is where the yellow line of the mask is) AE is in french sorry ! :
100% with feather (horrible!) :
Hope you will be able to help me because I dont understand where the problem is from!
Thank you for reading/helping me!
I have no idea what you are talking about. Your images are so dark, it's impossible to discern anything. If you're talking about specific edge blending issues, then I'm afraid we need better images for explanation. Simply seems to me you are trying to feather outside the original layer boundaries, which is not how it works.