网络立体电视系统不仅需要高的压缩效率，也需要能够视角可分级，这样才能够适应各种各样的终端和不同的网络环境。视角可分级既包括视角可分级编码，也包括视角可分级传输。视角可分级传输中不可避免地存在码流整形和视角同步的问题。提出了一套同步多视角可分级传输方案，将多视角码流分为3类，即主视，第二视角和其他所有视角。3类流分别通过独立的组播流进行传输，结合本文设计的码流整形和视角同步控制机制，能够有效地实现视角可分级传输，对各类多视终端都有良好的兼容性，实现传输带宽与终端类型的自适应。

Stereoscopic Television system demands view scalability as well as high compression rates, which enables the video to be applicable to various terminals. To achieve view scalability, firstly, it is necessary to achieve view scalability for the encoding part. Then, a view scalable transmission scheme is needed. In this paper, based on a scalable encoding scheme, the author proposed a scalable multi-view video transmission scheme that perfectly realizes the concept of view scalability by remarkably reducing bandwidth consumption while being applicable to various terminals. All views are divided into three groups in the proposed scheme: base view, second view and other view. Streams from those three types of views are transported with separate multicast groups. Also, a stream shaping and synchronizing scheme is proposed to tackle with the network problems that arise in the implementation of view scalability.