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MPEG-4 to H.264 Transcoding  

이성선 (세종대학교 인터넷공학과)
이영렬 (세종대학교 인터넷공학과)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SP / v.41, no.5, 2004 , pp. 275-282 More about this Journal
Abstract
In this paper, a transcoding method that transforms MPEG-4 video bitstream coded in 30 Hz frame rate into H.264 video bitstream of 15 Hz frame rate is proposed. The block modes and motion vectors in MPEG-4 is utilized in H.264 for block mode conversion and motion vector (MV) interpolation methods. The proposed three types of MV interpolation method can be used without performing full motion estimation in H.264. The proposed transcoder reduces computation amount for full motion estimation in H.264 and provides good quality of H.264 video at low bitrates. In experimental results, the proposed methods achieves 3.2-4 times improvement in computational complexity compared to the cascaded pixel-domain transcoding, while the PSNR (peak signal to noise ratio) is degraded with 0.2-0.9dB depending on video sizes.
Keywords
transcoding; motion estimation; motion vector interpolation; MPEG-4; H.264;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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