class MetadataCreator:

    def __init__(self):
        self._duration = None
        self._plot = None

    @property
    def duration(self):
        return self._duration

    @duration.setter
    def duration(self, value):
        self._duration = value

    @property
    def plot(self):
        return self._plot

    @plot.setter
    def plot(self, value):
        self._plot = value.strip()

    def get_video_dictionary(self):
        video_dictionary = dict()
        if self.plot is not None:
            video_dictionary["plot"] = self.plot
        if self.duration is not None:
            video_dictionary["duration"] = self.duration
        return video_dictionary