| 一种基于TFRC的MPEG-4视频传输和评估系统 |
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| 引用本文： | 吴波,陈心浩,刘海华.一种基于TFRC的MPEG-4视频传输和评估系统[J].现代科学仪器,2010(4):18-20. |
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| 作者姓名： | 吴波 陈心浩 刘海华 |
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| 作者单位： | 中南民族大学生物医学工程学院,湖北武汉,430074 |
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| 摘 要： | TFRC协议非常适合作为视频传输的协议,质量评估对于视频传输系统至关重要。本文提出了一种基于TFRC协议的实时视频传输系统及其在Evalvid改进框架下的评估模型。针对实际的视频文件来评估传输的质量和效率,分析了不同类型的视频帧在传输过程中的丢失情况,以及接收端的视频画面质量。NS2仿真实验结果表明该系统在复杂的网络环境中传输实时视频时,TFRC协议的友好性和平稳的发送速率使得在接收端能获得满意的视频质量。
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| 关 键 词： | TFRC协议 MPEG--4 视频传输 Evalvid |
System of MPEG-4 Video Transmission and Evaluation Based on TFRC |
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| Wu Bo,Chen Xinhao,Liu Haihua.System of MPEG-4 Video Transmission and Evaluation Based on TFRC[J].Modern Scientific Instruments,2010(4):18-20. |
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| Authors: | Wu Bo Chen Xinhao Liu Haihua |
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| Affiliation: | (College of Electronic and Information Engineering, South-Central University for Nationalities, Wuhan Hubei 430074, China) |
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| Abstract: | TFRC protocol is very suitable for video transmission, and quality assessment is also essential for video transmission system. In this paper a real-time video transmission system based on TFRC protocol is proposed, and an evaluation model about the system is improved in the framework of Evalvid. It assesses the quality and efficiency of the video transmission according to the actual video file, and analyzes different types of video frame losses during transmission as well as the picture quality in receiver. The results of simulation experiment in NS2 show that when this system transmits real-time video in complex network environment, the receiver can get satisfactory video quality by reason of the protocol friendliness and the smoothness of sending rate of TFRC. |
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| Keywords: | TFRC Protocol MPEG-4 Video Transmission Evalvid |
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