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Fast Transcoding from H.264 to MPEG-4  

권혁균 (세종대학교 인터넷공학과)
이영렬 (세종대학교 인터넷공학과)
Publication Information
Journal of the Institute of Electronics Engineers of Korea CI / v.41, no.6, 2004 , pp. 91-99 More about this Journal
Abstract
This paper proposed two transcodiing methods, which maintain the same spatio-temporal resolution and reduce a spatial resolution, to convert a H.264 video bitstream into an MPEG-4 video bitstream. When the H.264 video bitstream is transformed into the MPEG-4 video bitstream, the conversions between H.264 block types and MPEG-4 block types are performed by minimizing distortion and the ${\times}4$ block-based motion vector mapping is performed. The proposed two transcoding methods run 4.14～5.1 times as fast as the cascaded transcoding methods in MPEG-4 encoder side, while the PSNR (peak-signal-to ratio) is slightly degrade with maximum 0.3dB.
Keywords
Motion Estimation; Motion Compensation; Macroblock;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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