[_Al_]

thank you,
I think I saw it before, really advanced script for me, thinking what it would be good for :-) . I tried to butcher it a bit and came up with this, which works. So I might use it. Interesting. I realized also I could also use collections.namedtuple lib, not sure how I would implement it yet. But your VaporMagik seams to be fun:

import ctypes
import builtins

class PyObject(ctypes.Structure):
    pass

PyObject._fields_ = [
    ('ob_refcnt', ctypes.c_ssize_t),
    ('ob_type', ctypes.POINTER(PyObject)),
]

class NativeMappingProxy(PyObject):
    _fields_ = [('UnderlyingDictionary', ctypes.POINTER(PyObject))]

def Dereference(Pointer):
    ObjectHolder = []
    ctypes.pythonapi.PyList_Append(ctypes.py_object(ObjectHolder), Pointer)
    return ObjectHolder[0]
    
def ExposeAttributeDictionary(Type):
    AttributeMaps = Type.__dict__
    TransparentAttributeMaps = NativeMappingProxy.from_address(id(AttributeMaps))
    return Dereference(TransparentAttributeMaps.UnderlyingDictionary)

def SetTypeAttribute(Type, Name, Attribute):
    AttributeDictionary = ExposeAttributeDictionary(Type)
    AttributeDictionary[Name] = Attribute
    ctypes.pythonapi.PyType_Modified(ctypes.py_object(Type))

@property
def rgb(self):
    return self.resize.Bicubic(format=vs.RGB24)

SetTypeAttribute(vs.VideoNode, 'rgb', rgb)


clip = core.avisource.AVISource(file.avi)
print(clip)
print(clip.rgb)