MPEG-2 to H.264/AVC intra frame transcoding

Jyun De Wu, Yinyi Lin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations


The newest international video-coding standard H.264/AVC significantly achieves better coding performance compared to prior video coding standards such as MPEG-2, which has been widely used in today's digital video applications. To provide the interoperability between MPEG-2 and H.264/AVC, in this paper we propose an efficient cascaded mode decision for MPEG-2 to H.264/AVC intra frame transcoding, which is accomplished in two stages. In the first stage, the low-frequency AC components of DCT block of a MB is used to select I4MB or I16MB mode prediction; while in the second stage SATD coefficients, including SATD value and its variance, is used to skip improper modes for RDO mode decision. The experimental results, conducted on JM12.2 with fast C8MB mode decision, reveal that over 49% of computation time on average can be saved, while preserving good coding performance when compared with complex cascaded pixel domain transcoding (CCPDT); or 85% (a speed up factor of 7) when compared with CCPDT without considering fast C8MB. The coding performance is also compared with two other distinct algorithms [3], [4], and the results demonstrate that the proposed algorithm momentously outperforms these two algorithms in all three respects (PSNR, bit rate as well as computation time).

Original languageEnglish
Title of host publicationAdvances in Multimedia Information Processing - PCM 2009 - 10th Pacific Rim Conference on Multimedia, Proceedings
Number of pages12
StatePublished - 2009
Event10th Pacific Rim Conference on Multimedia, PCM 2009 - Bangkok, Thailand
Duration: 15 Dec 200918 Dec 2009

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume5879 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Conference10th Pacific Rim Conference on Multimedia, PCM 2009


  • ρ-domain model
  • H.264/AVC
  • Intra mode decision
  • Rate distortion optimization (RDO)
  • Rate-distortion cost function


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