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		<doi>10.1109/SIBGRAPI.2015.11</doi>
		<citationkey>PivaTest:2015:UsViSc</citationkey>
		<title>Using video scalability for designing safe multimedia transactions</title>
		<format>On-line</format>
		<year>2015</year>
		<numberoffiles>1</numberoffiles>
		<size>783 KiB</size>
		<author>Piva, Fabio,</author>
		<author>Testoni, Vanessa,</author>
		<affiliation>Samsung Research Institute Brazil</affiliation>
		<affiliation>Samsung Research Institute Brazil</affiliation>
		<editor>Papa, Joćo Paulo,</editor>
		<editor>Sander, Pedro Vieira,</editor>
		<editor>Marroquim, Ricardo Guerra,</editor>
		<editor>Farrell, Ryan,</editor>
		<e-mailaddress>fabiopiva@protonmail.com</e-mailaddress>
		<conferencename>Conference on Graphics, Patterns and Images, 28 (SIBGRAPI)</conferencename>
		<conferencelocation>Salvador, BA, Brazil</conferencelocation>
		<date>26-29 Aug. 2015</date>
		<publisher>IEEE Computer Society</publisher>
		<publisheraddress>Los Alamitos</publisheraddress>
		<booktitle>Proceedings</booktitle>
		<tertiarytype>Full Paper</tertiarytype>
		<transferableflag>1</transferableflag>
		<versiontype>finaldraft</versiontype>
		<keywords>Scalable video coding, VOD, item validation, fair exchange protocols, reversible degradation.</keywords>
		<abstract>In this paper we address video-on-demand (VOD) scenarios. Initially, we discuss how previous results on the unsuitability of the current adopted business model for the e-commerce of digital items affects VOD services. Then, we propose a reversible degradation method in order to address the lack of an accurate item validation step in current e-commerce implementations, thus providing robustness against mistaken purchases; the proposed method exploits the Scalable Video Coding (SVC) extension of the H.264/AVC standard. Finally, we illustrate how the proposed validation method can be used as a component for fair exchange protocol design, with the purpose of enabling unambiguous dispute resolution for unsatisfied buyers.</abstract>
		<language>en</language>
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