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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 colorchannelmixer(stream, *args, **kwargs):
 """Adjust video input frames by re-mixing color channels. Official documentation: `colorchannelmixer <https://ffmpeg.org/ffmpeg-filters.html#colorchannelmixer>`__ """

    return FilterNode(stream, colorchannelmixer.__name__, kwargs=kwargs).stream()