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作者机构:Univ Sao Paulo Dept Comp Sci Inst Math & Comp Sci Sao Paulo Brazil St Francis Xavier Univ Dept Comp Sci Antigonish NS B2G 1C0 Canada Kyungnam Univ Masan South Korea Hannam Univ Taejon South Korea
出 版 物:《MULTIMEDIA TOOLS AND APPLICATIONS》 (多媒体工具和应用)
年 卷 期:2009年第43卷第2期
页 面:109-129页
核心收录:
学科分类:0808[工学-电气工程] 08[工学] 0835[工学-软件工程] 0812[工学-计算机科学与技术(可授工学、理学学位)]
基 金:CAPES, Brazil [032506-6] FAPESP, Brazil
主 题:Live video Transcoding Multimedia
摘 要:The pervasive and ubiquitous computing has motivated researches on multimedia adaptation which aims at matching the video quality to the user needs and device restrictions. This technique has a high computational cost which needs to be studied and estimated when designing architectures and applications. This paper presents an analytical model to quantify these video transcoding costs in a hardware independent way. The model was used to analyze the impact of transcoding delays in end-to-end live-video transmissions over LANs, MANs and WANs. Experiments confirm that the proposed model helps to define the best transcoding architecture for different scenarios.