NDLI: A Priority Selected Cache Algorithm for Video Relay in Streaming Applications

Content Provider	IEEE Xplore Digital Library
Author	Shin-Hung Chang Chang, R.-I. Ho, J.-M. Yen-Jen Oyang
Copyright Year	1963
Abstract	With the popularization of Internet, many users can obtain various multimedia services through heterogeneous Internet. Among these services, video streaming application is the most challenging. Because of time constraint and variable bit rate (VBR) property of a video, the problem of streaming high quality video is insufficient external WAN bandwidth. Therefore, it is difficult to expand high quality video streaming services. To solve this problem, we proposed a novel video cache algorithm, called the Optimal Cache (OC) algorithm, for a relay video proxy. By caching portions of a video in a relay video proxy closed to clients, the video playback quality can be guaranteed and the problem of insufficient WAN bandwidth across Internet is eliminated. However, data packets are often lost while streaming video data across Internet, which downgrades video playback quality and even halts the video playback. In this paper, we refine the OC algorithm and propose a novel Priority Selected Cache (PSC) algorithm to select maximum high priority video data for caching in a relay video proxy. The PSC algorithm reduces the decoding errors caused by packet loss, improves error recovery, and provides QoS-guaranteed video playback. On the basis of experiment results with testing several benchmark videos, we show that the PSC algorithm caches at least 15% more high priority video data in a relay video proxy than conventional OC algorithm. Additionally, the PSC algorithm uses minimum storage in a relay video proxy and reduces the maximum bandwidth requirement in the WAN (as does the OC algorithm) subject to QoS-guaranteed video playback
Sponsorship	IEEE Broadcast Technology Society
Starting Page	79
Ending Page	91
Page Count	13
File Size	1619853
File Format	PDF
ISSN	00189316
Volume Number	53
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Streaming media Wide area networks Bit rate Bandwidth Video compression Web and internet services Spine Digital relays Computer displays Time factors video streaming Heterogeneous internet relay video proxy variable bit rate video cache video staging
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Media Technology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
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7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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