Sometimes grainers or the postprocessing done to them can shift the average brightness of the image.
We can easily fix this with a simple
core.akarin.Expr(grained.std.PlaneStats(), "x 0.5 x.PlaneStatsAverage / *")
Where grained is the grain applied to the blankclip, this will normalize the average brightness to 0.5 (which will be the average brightness of a blank clip in integer bitdepths, I believe for float we want to use 0).
Ideally this postprocessing should be done after FadeLimits is applied in order to reduce any issues introduced by clipping.
Sometimes grainers or the postprocessing done to them can shift the average brightness of the image. We can easily fix this with a simple
core.akarin.Expr(grained.std.PlaneStats(), "x 0.5 x.PlaneStatsAverage / *")Wheregrainedis the grain applied to the blankclip, this will normalize the average brightness to 0.5 (which will be the average brightness of a blank clip in integer bitdepths, I believe for float we want to use 0). Ideally this postprocessing should be done after FadeLimits is applied in order to reduce any issues introduced by clipping.