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Journal of Zhejiang University SCIENCE A 2006 Vol.7 No.100 P.76~81

http://doi.org/10.1631/jzus.2006.AS0076


Resynchronization and remultiplexing for transcoding to H.264/AVC


Author(s):  Zhou Jin, Xiong Hong-Kai, Song Li, Yu Song-Yu

Affiliation(s):  Institute of Image Communication and Information Processing, Shanghai Jiao Tong University, Shanghai 200030, China

Corresponding email(s):   zhoujin@sjtu.edu.cn, xionghongkai@sjtu.edu.cn, songli@qansoft.com, syyu@cdtv.org.cn

Key Words:  Transport stream (TS), Remultiplex, Time stamp, Transcoding, H.264/AVC


Zhou Jin, Xiong Hong-Kai, Song Li, Yu Song-Yu. Resynchronization and remultiplexing for transcoding to H.264/AVC[J]. Journal of Zhejiang University Science A, 2006, 7(100): 76~81.

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DOI - 10.1631/jzus.2006.AS0076


Abstract: 
H.264/MPEG-4 AVC standard appears highly competitive due to its high efficiency, flexibility and error resilience. In order to maintain universal multimedia access, statistical multiplexing, or adaptive video content delivery, etc., it induces an immense demand for converting a large volume of existing multimedia content from other formats into the h.264/AVC format and vice versa. In this work, we study the remultiplexing and resynchronization issue within system coding after transcoding, aiming to sustain the management and time information destroyed in transcoding and enable synchronized decoding of decoder buffers over a wide range of retrieval or receipt conditions. Given the common intention of multiplexing and synchronization mechanism in system coding of different standards, this paper takes the most widely used MPEG-2 transport stream (TS) as an example, and presents a software system and the key technologies to solve the time stamp mapping and relevant buffer management. The solution reuses previous information contained in the input streams to remultiplex and resynchronize the output information with the regulatory coding and composition structure. Experimental results showed that our solutions efficiently preserve the performance in multimedia presentation.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

[1] Bin, Y., Klara, N., 2002. A Realtime Software Solution for Resynchronizing Filtered MPEG-2 Transport Stream. Proceedings of the IEEE Fourth International Symposium on Multimedia Software Engineering.

[2] Hari, K., 2004. Issues in H.264/MPEG-2 Video Transcoding. Consumer Communications and Networking Conference (CCNC). The First IEEE, p.657-659.

[3] ISO/IEC JTC11/SC29/WG11, 1994. Generic Coding of Moving Pictures and Associated Audio: Systems. ISO/IEC 13818-1.

[4] Thomas, W., Gary, S., Gisle, B., Ajay, L., 2003. Overview of the H.264/AVC video coding standard. IEEE Trans. on Circuits and Systems for Video Technology, 7:560-576.

[5] Wang, X.D., Yu, S., Liang, L., 2002. Implementation of MPEG-2 transport stream remultiplexer for DTV broadcasting. IEEE Trans. on Consumer Electronics, 48(2): 329-334.

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