Bit-allocation for transcoding pre-encoded video streams

Jun Xin; Ming-Ting Sun; Kangwook Chun

doi:10.1117/12.453054

4 January 2002 Bit-allocation for transcoding pre-encoded video streams

Jun Xin, Ming-Ting Sun, Kangwook Chun

Proceedings Volume 4671, Visual Communications and Image Processing 2002; (2002) https://doi.org/10.1117/12.453054
Event: Electronic Imaging, 2002, San Jose, California, United States

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.

Citation Download Citation

Jun Xin, Ming-Ting Sun, and Kangwook Chun "Bit-allocation for transcoding pre-encoded video streams", Proc. SPIE 4671, Visual Communications and Image Processing 2002, (4 January 2002); https://doi.org/10.1117/12.453054

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