MPEG-4 to H.264 Transcoding using Macroblock Statistics

Author

Lee, Yung-Ki ; Lee, Sung-Sun ; Lee, Yung-Lyul

Author_Institution

Sch. of Comput. Eng., Sejong Univ., Seoul

fYear

2006

fDate

9-12 July 2006

Firstpage

57

Lastpage

60

Abstract

In this paper, a temporal resolution reduction transcoding method that transforms an MPEG-4 video bitstream into an H.264 video bitstream is proposed. The block mode statistics and motion vectors in the MPEG-4 bitstream are utilized in the H.264 encoder for block mode conversion and motion vector interpolation methods. The proposed motion vector interpolation methods are developed not to perform brute-force motion estimation again in the H.264. In the experimental results, the proposed methods achieve 3~4 times improvement in computational complexity compared to the cascade pixel-domain transcoding, while the PSNR (peak signal to noise ratio) is degraded with 0.2~0.9dB depending on the bitrates

Keywords

code standards; computational complexity; data compression; image resolution; interpolation; statistical analysis; transcoding; video coding; video streaming; H.264 video bitstream; MPEG-4; computational complexity; macroblock statistics; motion vector interpolation method; temporal resolution reduction; transcoding method; Bandwidth; Computational complexity; Decoding; Interpolation; MPEG 4 Standard; Motion estimation; PSNR; Statistics; Transcoding; Video compression; Block Mode; H.264; MPEG-4; Motion Estimation; Motion Vector;

fLanguage

English

Publisher

ieee

Conference_Titel

Multimedia and Expo, 2006 IEEE International Conference on

Conference_Location

Toronto, Ont.

Print_ISBN

1-4244-0366-7

Electronic_ISBN

1-4244-0367-7

Type

conf

DOI

10.1109/ICME.2006.262549

Filename

4036535