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Proceedings Paper

Reduced resolution MPEG-2 to H.264 transcoder
Author(s): Hari Kalva; Gerardo Fernández-Escribano; Kelly Kunzelmann
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Paper Abstract

This paper describes complexity reduction in MPEG-2 to H.264 transcoding with resolution reduction. The methods developed are applicable to transcoding any DCT based video such as MPEG-2, MPEG-4, and H.263 to the recently standardized H.264 video at a reduced resolution. H.264 is being adopted by mobile device industry and devices such as iPod use H.264. The mobile devices, however, need the video at a reduced resolution. The proposed transcoder accelerates the H.264 encoding stage by performing motion estimation for only one block size as determined by the trained decision trees. Our solution allows conversion of MPEG-2 video to the H.264 video format at a reduced resolution with substantially less computing complexity. We use machine learning based approaches to significantly reduce the complexity of this transcoding. Experimental results show a reduction in transcoding time of about 67% (a 3x speedup) with a less than -0.5 dB change in PSNR.

Paper Details

Date Published: 19 January 2009
PDF: 4 pages
Proc. SPIE 7257, Visual Communications and Image Processing 2009, 72571V (19 January 2009); doi: 10.1117/12.807336
Show Author Affiliations
Hari Kalva, Florida Atlantic Univ. (United States)
Gerardo Fernández-Escribano, Univ. de Castilla-La Mancha (Spain)
Kelly Kunzelmann, Florida Atlantic Univ. (United States)

Published in SPIE Proceedings Vol. 7257:
Visual Communications and Image Processing 2009
Majid Rabbani; Robert L. Stevenson, Editor(s)

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