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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 libvlc_video_get_size(p_mi, num):
    '''Get the pixel dimensions of a video.
    @param p_mi: media player.
    @param num: number of the video (starting from, and most commonly 0).
    @return: px pixel width, py pixel height.
    '''
    f = _Cfunctions.get('libvlc_video_get_size', None) or \
        _Cfunction('libvlc_video_get_size', ((1,), (1,), (2,), (2,),), None,
                    ctypes.c_int, MediaPlayer, ctypes.c_uint, ctypes.POINTER(ctypes.c_uint), ctypes.POINTER(ctypes.c_uint))
    return f(p_mi, num)