This combines kagefunc's adaptive_grain function with havsfunc's GrainFactory3 port to introduce additional size and sharpness parameters, as well as the option to only add grain to the luma plane. YUV input is required.

adptvgrnMod(clip_in, strength=0.25, cstrength=None, size=1, sharp=50, static=False, luma_scaling=12, grain_chroma=True, grainer=None, fade_edges=True, tv_range=True, protect_neutral=True, seed=-1, show_mask=False)

strength Strength of the grain generated by AddGrain for luma plane. Default is 0.25.

cstrength Strength of the grain generated by AddGrain for chroma planes. Default is None.

size Size of grain. Bicubic resizing is used. Default of 1 does not resize.

sharp Sharpness to use when upscaling the grain to size. This changes b and c:

b = sharp / -50 + 1
c = (1 - b) / 2

Default is 50.

static Whether to generate static or dynamic grain. Default is False.

luma_scaling This values changes the general grain opacity curve. Lower values will generate more grain, even in brighter scenes, while higher values will generate less, even in dark scenes. Default is 12.

grain_chroma Whether grain should be added to chroma planes. If set and cstrength=None, cstrength becomes strength / 2. Default is True.

grainer Option to allow use of alternative graining functions. Resizing will still be performed. Default is core.grain.Add.

fade_edges Whether to fade out graining as it gets close to the edges of allowed values. For 8-bit TV range, this means that 16 will not be grained, if the grainer would adjust by 2, 17 won't be grained et cetera. Default is True.

tv_range Whether fade_edges should use full or limited range. Default is True.

protect_neutral Whether to try to keep grain away from chroma plane when luma reaches the edges. Only works when fade_edges is on. Default is True.

seed Seed to use in AddGrain. Default of -1 is random.

show_mask Whether to show generated mask. Default is False.

Function to apply different functions to B, P, and I frames.

Wrapper around adptvgrnMod and frmtpfnc. Enter a list for each parameter with [B, P, I] frame type's values.