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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def crop(stream, x, y, width, height, **kwargs):
 """Crop the input video. Args: x: The horizontal position, in the input video, of the left edge of the output video. y: The vertical position, in the input video, of the top edge of the output video. width: The width of the output video. Must be greater than 0. heigth: The height of the output video. Must be greater than 0. Official documentation: `crop <https://ffmpeg.org/ffmpeg-filters.html#crop>`__ """

    return FilterNode(
        stream,
        crop.__name__,
        args=[width, height, x, y],
        kwargs=kwargs
    ).stream()