illiseconds, and 5760 in the timescale indicated in the Media Header Box.

            To indicate the valid samples excluding the padded samples at the end of Opus bitstream, the duration of
            the last Opus sample of an Opus bitstream is given by multiplying the number of the valid samples by the
            value produced by dividing the value of the timescale field in the Media Header Box by 48000.

        4.3.5 Sub-sample<a name="4.3.5"></a>
            The structure of the last Opus packet i