NDLI: Joint online transcoding and geo-distributed delivery for dynamic adaptive streaming

Content Provider	IEEE Xplore Digital Library
Author	Zhi Wang Lifeng Sun Chuan Wu Wenwu Zhu Shiqiang Yang
Copyright Year	2014
Description	Author affiliation: Dept. of Comput. Sci. & Technol., Tsinghua Univ., Beijing, China (Zhi Wang; Lifeng Sun; Wenwu Zhu; Shiqiang Yang) \|\| Dept. of Comput. Sci., Univ. of Hong Kong, Hong Kong, China (Chuan Wu)
Abstract	Dynamic adaptive video streaming has emerged as a popular approach for video streaming in today's Internet. To date the two important components in dynamic adaptive streaming, video transcoding which generates the adaptive bitrates of a video and video delivery which streams the videos to users, have been separately studied, resulting in a huge waste of computation and storage resource due to transcoding useless videos and suboptimal streaming quality due to homogeneous video replication. In this paper, we propose to jointly perform video transcoding and video delivery for adaptive streaming in an online manner. We conduct extensive measurement studies of a video sharing system and a CDN to motivate our design. We formulate and solve optimization problems to enable high streaming quality for the users, and low computation and replication costs for the system. In particular, our design connects video transcoding and video delivery based on users' preferences of CDN regions and regional preferences of video versions. Extensive trace-driven experiments further confirm the superiority of our design.
Starting Page	91
Ending Page	99
File Size	931198
Page Count	9
File Format	PDF
ISBN	9781479933600
DOI	10.1109/INFOCOM.2014.6847928
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-04-27
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Servers Streaming media Transcoding Bandwidth Bit rate Joints Availability
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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