Title :
H.264 to MPEG-4 Transcoding Using Block Type Information
Author :
Hur, Jae-Ho ; Lee, Yung-Lyul
Author_Institution :
Dept. of Internet Eng., Sejong Univ., Seoul
Abstract :
In this paper, we propose a heterogeneous transcoding method of converting an 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 the H.264 block types and the MPEG-4 block types are performed by minimizing the distortion, and 4times4 block-based motion vector mapping is performed. The proposed transcoder runs 5.2 times faster than the cascaded transcoding method, while maintaining the similar PSNR (peak-signal-to-noise ratio).
Keywords :
transcoding; video coding; H.264 video bitstream; MPEG-4 transcoding; block type information; heterogeneous transcoding; motion vector mapping; Decoding; Discrete cosine transforms; IEC standards; ISO standards; MPEG 4 Standard; Motion compensation; Motion estimation; Quality of service; Transcoding; Video coding; H.264; MPEG-4; Motion Compensation; Motion Estimation; Transcoding;
Conference_Titel :
TENCON 2005 2005 IEEE Region 10
Conference_Location :
Melbourne, Qld.
Print_ISBN :
0-7803-9311-2
Electronic_ISBN :
0-7803-9312-0
DOI :
10.1109/TENCON.2005.300892
