 Here, to couple front left to front right channels into the first stream, and couple rear left to rear right
            channels into the second stream, reordering is needed since coupled streams must precede any non-coupled
            stream. You extract the four Opus bitstreams from this track and you encapsulate two of the four into a track
            and the others into another track. The former track is as follows.
                OutputChannelCount = 6;
                StreamCount        = 2;
    