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4 January 2002 Bit-allocation for transcoding pre-encoded video streams
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Proceedings Volume 4671, Visual Communications and Image Processing 2002; (2002)
Event: Electronic Imaging, 2002, San Jose, California, United States
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.
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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);

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