in augly/video/augmenters/ffmpeg/resize.py [0:0]
def __init__(self, height: Optional[int], width: Optional[int]):
assert height is None or height > 0, "Height must be set to None or be positive"
assert width is None or width > 0, "Width must be set to None or be positive"
self.new_h = height or "ih"
self.new_w = width or "iw"