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scale

Lanczos_PreSS

Bases: Lanczos

Convenience class to pass to a dehalo function. This serves the same purpose as NNEDI to double and reverse using point. Except it is a quite a bit faster and (if using opencl) takes a lot of load off the GPU.

Source code in vodesfunc/scale.py 
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class Lanczos_PreSS(Lanczos):
    """
    Convenience class to pass to a dehalo function.
    This serves the same purpose as NNEDI to double and reverse using point.
    Except it is a quite a bit faster and (if using opencl) takes a lot of load off the GPU.
    """

    @inject_self.init_kwargs.clean
    def scale(self, clip: vs.VideoNode, width: int, height: int, shift: tuple[float, float] = (0, 0), **kwargs) -> vs.VideoNode:
        if width != clip.width * 2 or height != clip.height * 2:
            raise ValueError("Lanczos_PreSS: You're probably not using this correctly.")
        return Lanczos.scale(clip, width, height, (-0.25, -0.25))