metric ¶

VBench Motion Smoothness — AMT-S frame interpolation quality.

Takes every-other frame, uses AMT-S to interpolate the missing middle frames, then compares interpolated vs actual frames. Score = (255 - mean_pixel_diff) / 255. Higher = smoother motion.

MotionSmoothnessMetric()

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def __init__(self) -> None:
    super().__init__()
    self._model: Any = None
    self._embt: Any = None
    self._chunk_size = 8