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Automatic RTP Time-stamping Method for SVC Video Transmission  

Seo, Kwang-Deok (연세대학교 컴퓨터정보통신공학부)
Jung, Soon-Heung (한국전자통신연구원 방통미디어연구부)
Kim, Jae-Gon (한국항공대학교 항공전자 및 정보통신공학부)
Yoo, Jeong-Ju (한국전자통신연구원 방통미디어연구부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.33, no.6C, 2008 , pp. 471-479 More about this Journal
Abstract
In this paper, we propose a novel algorithm to automatically generate an RTP timestamp value that is required for the RTP packetization in order to transmit SVC video over various If networks such as Internet. Unlike the conventional single layer coding algorithms such as H.263, MPEG-4 and H.264, SVC generates a multi-layered single bitstream which is composed of a base layer and one or more enhancement layers in order to simultaneously provide temporal, spatial, and SNR scalability. Especially, in order to provide temporal scalability based on hierarchical B-picture prediction structure, the encoding (or transmission) and display order of pictures in SVC coding is completely decoupled. Thus, the timestamp value to be specified at the header of each RTP packet in video transmission does not increase monotonically according to the display time instant of each picture. Until now, no method for automatically generating an RTP timestamp when SVC video is loaded in a RTP packet has teen introduced. In this paper, a novel automatic RTP timestamp generation method exploiting the TID (temporal ID) field of the SVC NAL unit header is proposed to accommodate the SVC video transmission.
Keywords
SVC Video Transport; RTP Packetization; RTP Timestamp;
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