Deoldify Vapoursynth filter

[Selur]

That's what I suspected, seems like older cards do not support FP16.
Try opening Hybrid\64bit\Vapoursynth\Lib\site-packages\vsdeoldify\__init__.py inside a text editor and change

# adjusting clip's color space to RGBH for vsDDColor
    clipb = ddcolor(clipb.resize.Bicubic(format=vs.RGBH, range_s="limited"), model=model, input_size=input_size, device_index=device_index, num_streams=num_streams)

to

# adjusting clip's color space to RGBS for vsDDColor
    clipb = ddcolor(clipb.resize.Bicubic(format=vs.RGBS, range_s="limited"), model=model, input_size=input_size, device_index=device_index, num_streams=num_streams)

this probably should 'fix' the problem.
@Dan64: Maybe add an FP16 option for DDColor, depending on which DDColor is called with RGBS or RGBH content?

Cu Selur