       An Opus sample is exactly one Opus packet for each of different Opus bitstreams. Due to support more than
            two channels, an Opus sample can contain frames from multiple Opus bitstreams but all Opus packets shall
            share with the total of frame sizes in a single Opus sample. The way of how to pack an Opus packet from
            each of Opus bitstreams into a single Opus sample follows Appendix B. in RFC 6716 [2].
            The endianness has nothing to do with any Opus sample s