公开(公告)号：US08984570B2

公开(公告)日：2015-03-17

申请号：US14162153

申请日：2014-01-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Peiyu Yue ,  Weizhong Yuan ,  Teng Shi ,  Guangyuan Liu ,  Yuanyuan Zhang ,  Yonghui Tian ,  Renzhou Zhang ,  Lingyan Wu ,  Chuxiong Zhang

IPC: H04N7/173 ,  H04N21/262 ,  H04N21/462 ,  H04L29/06 ,  H04N21/458 ,  H04N21/234 ,  H04N11/02 ,  G06F15/16

CPC classification number: H04N21/26258 ,  H04L65/4084 ,  H04L65/60 ,  H04N21/23424 ,  H04N21/458 ,  H04N21/4622

Abstract: A method and an apparatus for supporting time shift playback in an adaptive Hypertext Transfer Protocol (HTTP) streaming transmission solution are disclosed. The method includes: sending a live media presentation description (MPD) request message to a media server; receiving a response message that includes MPD for a current time period, where the MPD further includes media presentation information for another time period; determining that a moment of a media segment to be requested currently exceeds a time range corresponding to the MPD; acquiring the corresponding MPD according to the media presentation information corresponding to the media segment, and requesting, according to the acquired corresponding MPD, the media segment. In this manner, a client supports time shift playback of a larger time range, and at the same time, the size of the MPD is capable of remaining in an acceptable range.

Abstract translation: 公开了一种用于支持自适应超文本传输​​协议（HTTP）流传输解决方案中的时移重放的方法和装置。 该方法包括：向媒体服务器发送实况媒体演示描述（MPD）请求消息; 接收包括当前时间段的MPD的响应消息，其中MPD还包括另一时间段的媒体呈现信息; 确定要请求的媒体片段的时刻当前超过与MPD对应的时间范围; 根据与媒体片段对应的媒体呈现信息，获取对应的MPD，并根据获取的对应的MPD请求媒体片段。 以这种方式，客户端支持更大时间范围的时移重放，同时MPD的尺寸能够保持在可接受的范围内。