随着移动互联网技术与智能手持设备的发展， IPTV面临多屏融合的需求，可伸缩编码技术可以很好地解决网速和设备分辨率的差异问题。本文设计和实现了一套基于H264/SVC标准的高清实时IPTV系统，通过对视频在时间、空间、质量上进行可伸缩编码，以及TS解封装、AVC解码和TS流传输H264/SVC等模块的实现，通过实时编码，使拥有不同带宽和设备分辨率的用户能并发实时地观看节目。实验证明了系统的有效性和稳定性。%With the rapid development of mobile Internet technology and smart handheld devices in recent years, IPTV facing the demand of multi-screen integration. Scalable video coding technology can be a good solution to the differences in network speed and resolution of device. In this paper, we design and implement an HD real-time system of IPTV based on H264/SVC standard. The finalized H264/SVC standards are able to achieve scalable coding in the temporal, spatial, or fidelity domain. This paper presents a detailed introduction of TS encapsulation, AVC decoding and the encapsulation of SVC. By encoding the video in real-time, users with different bandwidth and device resolution concurrent viewing program in real-time. In the end of the paper, the experiments proved the effectiveness and stability of the system.
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