Patent ID: 8369415

Claim:
A method of decoding an enhanced multiplexed transport stream comprising a succession of enhanced access units, each comprising a base layer access unit and at least one enhancement layer access unit, each access unit comprising a plurality of syntax structures, said method comprising: passing the syntax structures of the base layer access units to a base layer buffer, passing syntax structures of the enhancement layer access units to an enhancement layer buffer, wherein the syntax structures of the enhancement layer access units comprise video layer syntax structures and non-video layer syntax structures, separating the syntax structures of the base layer access units from the succession of enhanced access units, including separating non-video layer syntax structures of the enhancement layer access units from the succession; outputting the syntax structures passed to the base layer buffer in a predetermined sequence, outputting the syntax structures passed to the enhancement layer buffer in a predetermined sequence, and recombining the sequences of syntax structures output by the base layer buffer and the enhancement layer buffer respectively to form a complete enhanced access unit, comprising base layer syntax structures and enhancement layer syntax structures in a predetermined sequence; wherein: the syntax structures passed to the base layer buffer include enhancement layer non-video syntax structures; all the video layer syntax structures of the enhancement layer access units pass to the enhancement layer buffer; and none of the enhancement layer non-video syntax structures of the enhancement layer access units pass to the enhancement layer buffer.