METHOD AND APPARATUS FOR MULTIPLEXING LAYERED CODED CONTENTS

摘要

When layered coded content is transmitted over a fixed capacity network link, bitrate peaks may occur at similar time instances at the base layer and enhancement layer. To more efficiently use the bandwidth, the present principles propose different methods, such as adding a delay to a base layer bit stream or an enhancement layer bit stream, and shifting an “over-the-limit” portion of bits by a time window. At the receiver side, the present principles provide different channel change mechanisms to allow a user to change channel quickly even given the delay added in the bit streams. In particular, a decoder can start rendering the base layer content, without having to wait for the enhancement layer to be available. In one embodiment, the decoding of the base layer content is slowed down in order to align in time with the enhancement layer content.

主权项

1. A method of processing a first bit stream and a second bit stream, comprising:
accessing the first bit stream and the second bit stream, wherein the first bit stream corresponds to an enhancement layer of layered coded content, and the second bit stream corresponds to a base layer of the layered coded content; delaying the second bit stream by a first time duration; and multiplexing the first bit stream and the delayed second bit stream.