[-] Show simple item record

dc.contributor.advisorZeng, Wenjun, 1967-eng
dc.contributor.authorDong, Lina, 1980-eng
dc.date.issued2009eng
dc.date.submitted2009 Falleng
dc.descriptionTitle from PDF of title page (University of Missouri--Columbia, viewed on March 10, 2010).eng
dc.descriptionThe entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file.eng
dc.descriptionThesis advisor: Dr. Wenjun Zeng.eng
dc.descriptionM.S. University of Missouri--Columbia 2009.eng
dc.description.abstract[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] In recent years, with the growing popularity of inter-networking and digital video, there arises a trend of delivering television services using the Internet Protocol, (a.k.a. IPTV). Unlike in conventional television, where the signal is usually delivered over radio-frequency broadcast, cables or satellites, IPTV usually makes use of a packet-switching network, where the bandwidth is shared among multiple users. In this thesis, we focus on providing adaptive video services according to the available resource, i.e., bandwidth, latency and computation power. To address the long delay in channel switching in IPTV, a two-step switching algorithm is proposed which introduces a mid-rate bridging stream to reduce the decoder buffering delay. In conjunction with content-aware P-frame switching, our system can largely shorten the application-layer delay which causes the major latency in IPTV channel switching, and greatly improves the quality-of-service (QoS) and quality-of-experience (QoE) of IPTV. We also propose an informed transcoding scheme, where the encoder generates multiple versions of the same video content, but only sends the highest quality stream together with the motion and mode information (side information) of other lower quality streams. When the lower quality streams need to be generated, very low-complexity transcoding can be executed with the aid of the transmitted side information (up to 100 times faster than full-search transcoding). Informed transcoding achieves the best last-hop transcoding efficiency (same as full-search transcoding, better than most other transcoding schemes), and has much less overhead at the backbone network than simulcast. Such overhead is further reduced by exploiting the cross-layer correlation of the side-information.eng
dc.description.bibrefIncludes bibliographical referenceseng
dc.format.extentix, 64 pageseng
dc.identifier.oclc557631772eng
dc.identifier.urihttps://doi.org/10.32469/10355/6666eng
dc.identifier.urihttps://hdl.handle.net/10355/6666
dc.languageEnglisheng
dc.publisherUniversity of Missouri--Columbiaeng
dc.relation.ispartofcommunityUniversity of Missouri-Columbia. Graduate School. Theses and Dissertations. Theses. 2009 Theseseng
dc.rightsAccess is limited to the campuses of the University of Missouri.eng
dc.subject.lcshMulticasting (Computer networks)eng
dc.subject.lcshInternet televisioneng
dc.subject.lcshDigital videoeng
dc.subject.lcshInternetworking (Telecommunication)eng
dc.titleVideo adaptation for IPTV applicationseng
dc.typeThesiseng
thesis.degree.disciplineComputer science (MU)eng
thesis.degree.grantorUniversity of Missouri--Columbiaeng
thesis.degree.levelMasterseng
thesis.degree.nameM.S.eng


Files in this item

[PDF]
[PDF]
[PDF]

This item appears in the following Collection(s)

[-] Show simple item record