IPTV与OTT TV业务的发展现状及趋势

doi:10.3969/j.issn.1000-0801.2013.04.002

Telecommunications Science ›› 2013, Vol. 29 ›› Issue (4): 8-11.doi: 10.3969/j.issn.1000-0801.2013.04.002

• Topic: smart TV terminal technology and Application • Previous Articles Next Articles

Development Status and Trend of IPTV and OTT TV

Li Jiang,Zhuxiang Deng

IPTV Lab of China Telecom Corporation，Shanghai Research Institute of China Telecom Co.，Ltd.，Shanghai 200122，China

Online:2013-04-15 Published:2013-04-15

Abstract

Li Jiang,Zhuxiang Deng. Development Status and Trend of IPTV and OTT TV[J]. Telecommunications Science, 2013, 29(4): 8-11.

	OTT TV的HTTP方式	IPTV的RTSP方式
内容编码	常用H.264 VBR编码，通过低码率实现高清晰度，但不适合直播	常用H.264 CBR编码，视频质量有保障，适用于直播、点播及大运动量场景
传输码率	标清平均码率800 kbit/s，峰值2 Mbit/s；高清平均码率1.3 Mbit/s，峰值4～5 Mbit/s	标清恒定码率：1.3～2.5 Mbit/s高清恒定码率：8～10 Mbit/s
内容传输	实现简单，通用服务器即可	实现较复杂，需专用服务器
网络要求	网络质量（带宽、时延、抖动）要求低	网络质量（带宽、时延、抖动）要求高
服务质量	无质量保障，需下载缓冲播放	质量有保障，实时性高
业务功能	适用于点播	全面支持点播、直播

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Development Status and Trend of IPTV and OTT TV

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