DCT-domain MPEG-2/H.264 Video Transcoder System Architecture for DMB Services 


Vol. 12,  No. 6, pp. 637-646, Oct.  2005
10.3745/KIPSTB.2005.12.6.637


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  Abstract

Most of the multimedia contents for DBM services are provided as MPEG-2 bit streams. However, they have to be transcoded to H.264 bit streams for practical services because the standard video codec for DMB is H.264. The existing transcoder architecture is Cascaded Pixel-Domain Transcoding Architecture, which consists of the MPEG-2 decoding phase and the H.264 encoding phase. This architecture can be easily implemented using MPEG-2 decoder and H.264 encoder without source modifying. However, it has disadvantages in transcoding time and DCT-mismatch problem. In this paper, we propose two kinds of transcoder architectures, DCT-OPEN and DCT-CLOSED, to complement the CPDT architecture. Although DCT-OPEN has lower PSNR than CPDT due to drift problem, it is efficient for real-time transcoding. On the contrary, the DCT-CLOSED architecture has the advantage of PSNR over CPDT at the cost of transcoding time.

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[IEEE Style]

J. K. Lee, S. Y. Kwon, S. H. Park, Y. J. Kim, K. D. Chung, "DCT-domain MPEG-2/H.264 Video Transcoder System Architecture for DMB Services," The KIPS Transactions:PartB , vol. 12, no. 6, pp. 637-646, 2005. DOI: 10.3745/KIPSTB.2005.12.6.637.

[ACM Style]

Joo Kyong Lee, Soon Young Kwon, Seong Ho Park, Young Ju Kim, and Ki Dong Chung. 2005. DCT-domain MPEG-2/H.264 Video Transcoder System Architecture for DMB Services. The KIPS Transactions:PartB , 12, 6, (2005), 637-646. DOI: 10.3745/KIPSTB.2005.12.6.637.

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