Content-Based Complexity Reduction Methods for MPEG-2 to H.264 Transcoding

Shen LI; Lingfeng LI; Takeshi IKENAGA; Shunichi ISHIWATA; Masataka MATSUI; Satoshi GOTO

Content-Based Complexity Reduction Methods for MPEG-2 to H.264 Transcoding

Shen LI, Lingfeng LI, Takeshi IKENAGA, Shunichi ISHIWATA, Masataka MATSUI, Satoshi GOTO

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The coexistence of MPEG-2 and its powerful successor H.264/AVC has created a huge need for MPEG-2/H.264 video transcoding. However, a traditional transcoder where an MPEG-2 decoder is simply cascaded to an H.264 encoder requires huge computational power due to the adoption of a complicated rate-distortion based mode decision process in H.264. This paper proposes a 2-D Sobel filter based motion vector domain method and a DCT domain method to measure macroblock complexity and realize content-based H.264 candidate mode decision. A new local edge based fast INTRA prediction mode decision method is also adopted to boost the encoding efficiency. Simulation results confirm that with the proposed methods the computational burden of a traditional transcoder can be reduced by 20%30% with only a negligible bit-rate increase for a wide range of video sequences.

Publication: IEICE TRANSACTIONS on Information Vol.E90-D No.1 pp.90-98

Publication Date: 2007/01/01

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Online ISSN: 1745-1361

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Type of Manuscript: Special Section PAPER (Special Section on Advanced Image Technology)

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Shen LI, Lingfeng LI, Takeshi IKENAGA, Shunichi ISHIWATA, Masataka MATSUI, Satoshi GOTO, "Content-Based Complexity Reduction Methods for MPEG-2 to H.264 Transcoding" in IEICE TRANSACTIONS on Information, vol. E90-D, no. 1, pp. 90-98, January 2007, doi: .
Abstract: The coexistence of MPEG-2 and its powerful successor H.264/AVC has created a huge need for MPEG-2/H.264 video transcoding. However, a traditional transcoder where an MPEG-2 decoder is simply cascaded to an H.264 encoder requires huge computational power due to the adoption of a complicated rate-distortion based mode decision process in H.264. This paper proposes a 2-D Sobel filter based motion vector domain method and a DCT domain method to measure macroblock complexity and realize content-based H.264 candidate mode decision. A new local edge based fast INTRA prediction mode decision method is also adopted to boost the encoding efficiency. Simulation results confirm that with the proposed methods the computational burden of a traditional transcoder can be reduced by 20%30% with only a negligible bit-rate increase for a wide range of video sequences.
URL: https://globals.ieice.org/en_transactions/information/10.1587/e90-d_1_90/_p

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@ARTICLE{e90-d_1_90,
author={Shen LI, Lingfeng LI, Takeshi IKENAGA, Shunichi ISHIWATA, Masataka MATSUI, Satoshi GOTO, },
journal={IEICE TRANSACTIONS on Information},
title={Content-Based Complexity Reduction Methods for MPEG-2 to H.264 Transcoding},
year={2007},
volume={E90-D},
number={1},
pages={90-98},
abstract={The coexistence of MPEG-2 and its powerful successor H.264/AVC has created a huge need for MPEG-2/H.264 video transcoding. However, a traditional transcoder where an MPEG-2 decoder is simply cascaded to an H.264 encoder requires huge computational power due to the adoption of a complicated rate-distortion based mode decision process in H.264. This paper proposes a 2-D Sobel filter based motion vector domain method and a DCT domain method to measure macroblock complexity and realize content-based H.264 candidate mode decision. A new local edge based fast INTRA prediction mode decision method is also adopted to boost the encoding efficiency. Simulation results confirm that with the proposed methods the computational burden of a traditional transcoder can be reduced by 20%30% with only a negligible bit-rate increase for a wide range of video sequences.},
keywords={},
doi={},
ISSN={1745-1361},
month={January},}

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TY - JOUR
TI - Content-Based Complexity Reduction Methods for MPEG-2 to H.264 Transcoding
T2 - IEICE TRANSACTIONS on Information
SP - 90
EP - 98
AU - Shen LI
AU - Lingfeng LI
AU - Takeshi IKENAGA
AU - Shunichi ISHIWATA
AU - Masataka MATSUI
AU - Satoshi GOTO
PY - 2007
DO -
JO - IEICE TRANSACTIONS on Information
SN - 1745-1361
VL - E90-D
IS - 1
JA - IEICE TRANSACTIONS on Information
Y1 - January 2007
AB - The coexistence of MPEG-2 and its powerful successor H.264/AVC has created a huge need for MPEG-2/H.264 video transcoding. However, a traditional transcoder where an MPEG-2 decoder is simply cascaded to an H.264 encoder requires huge computational power due to the adoption of a complicated rate-distortion based mode decision process in H.264. This paper proposes a 2-D Sobel filter based motion vector domain method and a DCT domain method to measure macroblock complexity and realize content-based H.264 candidate mode decision. A new local edge based fast INTRA prediction mode decision method is also adopted to boost the encoding efficiency. Simulation results confirm that with the proposed methods the computational burden of a traditional transcoder can be reduced by 20%30% with only a negligible bit-rate increase for a wide range of video sequences.
ER -