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Proceedings Paper

Bit-allocation for transcoding pre-encoded video streams
Author(s): Jun Xin; Ming-Ting Sun; Kangwook Chun
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Paper Abstract

In video transcoding, useful coding statistics become available when the input video stream is decoded. It is possible to utilize these statistics to improve the transcoding performance. In this paper we investigate how to use these statistics to perform the picture bit-allocation for transcoding a pre-encoded video bit-stream. We propose a scheme to estimate the complexities of the pictures of the output video using the coding statistics computed from the input video stream. Based on the estimated picture complexity, we present a picture bit-allocation algorithm for the rate-control of the transcoding process. The algorithm is simple to compute, and effectively improves the video quality and reduces the picture quality variations.

Paper Details

Date Published: 4 January 2002
PDF: 8 pages
Proc. SPIE 4671, Visual Communications and Image Processing 2002, (4 January 2002); doi: 10.1117/12.453054
Show Author Affiliations
Jun Xin, Univ. of Washington (United States)
Ming-Ting Sun, Univ. of Washington (United States)
Kangwook Chun, Samsung Electronics Co., Ltd. (South Korea)

Published in SPIE Proceedings Vol. 4671:
Visual Communications and Image Processing 2002
C.-C. Jay Kuo, Editor(s)

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