| 基于概率估计的自适应媒体播放算法 |
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| 引用本文： | 范铭娜,杨坚,赵宇.基于概率估计的自适应媒体播放算法[J].计算机工程,2010,36(24):217-219. |
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| 作者姓名： | 范铭娜 杨坚 赵宇 |
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| 作者单位： | (1. 中国科学技术大学自动化系，合肥 230027；2. 上海微系统与信息技术研究所，上海 200050) |
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| 基金项目： | 国家"863"计划基金资助项目，国家自然科学基金资助项目，新世纪优秀人才支持计划基金资助项目，中科院优秀博士论文获得者科学基金资助项目 |
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| 摘 要： | 针对缓冲区下溢造成的视频播放抖动和中断问题，提出一种基于概率估计的自适应媒体播放算法。根据网络信道状态和估计的下溢概率和上溢概率控制视频帧的持续播放时间，适当控制播放速率的变化范围和变化量，减少缓冲区下溢概率和播放时延，实现视频平滑播放。仿真结果证明，该算法性能优于传统的自适应媒体播放算法。
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| 关 键 词： | 概率估计 滑动窗口 自适应媒体播放 |
Adaptive Media Playout Algorithm Based on Probability Estimation |
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| FAN Ming-na,YANG Jian,ZHAO Yu.Adaptive Media Playout Algorithm Based on Probability Estimation[J].Computer Engineering,2010,36(24):217-219. |
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| Authors: | FAN Ming-na YANG Jian ZHAO Yu |
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| Affiliation: | (1. Department of Automation, University of Science and Technology of China, Hefei 230027, China; 2. Shanghai Institute of Micro-system and Information Technology, Shanghai 200050, China) |
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| Abstract: | An Adaptive Media Playout(AMP) algorithm based on probability estimation is proposed to reduce the video playout jitter and playout halt caused by buffer underflow. It adjusts the duration of each frame according to the channel state and the estimated probability of underflow and overflow. It controls the playout rate range and the variation of the playout rate of the consecutive video frames to achieve the purpose of eliminating buffer outage and smoothing the video playout speed. Simulation results demonstrate that as compared to other AMP schemes, the proposed algorithm provides better performance. |
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| Keywords: | probability estimation sliding window Adaptive Media Playout(AMP) |
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