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- W2066591515 abstract "In this paper, we statistically characterized four VBR encoded video sequences, containing I/B/P frames, at the Slice layer with the goal of developing an accurate source model to better understand the bit-rate behavior of these sources. We presented the cells/slice distributions and showed that it is 'heavy tailed' and fits the Pareto distribution better than Gamma. We showed that an 8-state Markov Chain fits the cells/slice distribution well, reaching steady state after 37 to 80 transitions (2 to 5 frames). We also showed that the autocorrelation function is quasi-periodic which is mostly due to the frame sequence pattern rather than spatial content. We discussed the impact to I/B/P sequences on multiplexing and dynamic bandwidth allocation and proposed a multiplexing method called Time Shifted Multiplexing (TSM); whereby, the multiplexer attempts to overlap I and P frames of one video stream with B frames of another. This tends to reduce both Peak-to-Mean-Ratio and Coefficient-of-Variation of the multiplexed output stream. We showed that coefficient-of-variation reduced in half and bandwidth requirements reduced by 41% using TSM." @default.
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- W2066591515 date "1995-03-14" @default.
- W2066591515 modified "2023-09-23" @default.
- W2066591515 title "<title>Statistical characterization of MPEG VBR video at the slice layer</title>" @default.
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- W2066591515 doi "https://doi.org/10.1117/12.206053" @default.
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