Metadata format and Update Notification Protocol Yuji Nomura Fujitsu Laboratories Ltd. Henning...
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Transcript of Metadata format and Update Notification Protocol Yuji Nomura Fujitsu Laboratories Ltd. Henning...
![Page 1: Metadata format and Update Notification Protocol Yuji Nomura Fujitsu Laboratories Ltd. Henning Schulzrinne Columbia University.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f155503460f94c2a5d0/html5/thumbnails/1.jpg)
Metadata format andMetadata format andUpdate Notification Update Notification Protocol Protocol
Yuji NomuraFujitsu Laboratories Ltd.
Henning SchulzrinneColumbia University
![Page 2: Metadata format and Update Notification Protocol Yuji Nomura Fujitsu Laboratories Ltd. Henning Schulzrinne Columbia University.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f155503460f94c2a5d0/html5/thumbnails/2.jpg)
BackgroundBackground Standardization activities for electronic progr
am guides (EPGs) MPEG-7, TV Anytime Forum, DVB, etc.
Proprietary EPGs e.g., Cable TV, PVR
Also, protocol managing metadata
![Page 3: Metadata format and Update Notification Protocol Yuji Nomura Fujitsu Laboratories Ltd. Henning Schulzrinne Columbia University.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f155503460f94c2a5d0/html5/thumbnails/3.jpg)
IssuesIssues draft-nomura-mmusic-pguide-requirements-
00.txt Are requirements for EPGs appropriate? Does existing formats meet the requirements?
Protocol to manage metadata
![Page 4: Metadata format and Update Notification Protocol Yuji Nomura Fujitsu Laboratories Ltd. Henning Schulzrinne Columbia University.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f155503460f94c2a5d0/html5/thumbnails/4.jpg)
Requirements for MetadataRequirements for Metadata Describe features of multimedia
content comprehensively: URL, genre, rating, availability,
bandwidth, billing,.. Multiple segments in a program
Multiple metadata EPG sources
![Page 5: Metadata format and Update Notification Protocol Yuji Nomura Fujitsu Laboratories Ltd. Henning Schulzrinne Columbia University.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f155503460f94c2a5d0/html5/thumbnails/5.jpg)
MPEG-7MPEG-7 Provides description tools for multimedia co
ntent Defines a comprehensive set of audiovisual
description tools Description Definition Language (DDL) = XML sc
hema + some extended datatypes Description Schema (DS) = structure, semantic
s Descriptor (D) = features
DDL was standardized in Sep. 2001
![Page 6: Metadata format and Update Notification Protocol Yuji Nomura Fujitsu Laboratories Ltd. Henning Schulzrinne Columbia University.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f155503460f94c2a5d0/html5/thumbnails/6.jpg)
TV Anytime Forum (TVA)TV Anytime Forum (TVA) Uses MPEG-7 tools to describe EPGs Describes structure of programs
Multiple programs in a program group Multiple program locations for a program
Allows multiple EPG sources Describes user preferences and usage his
tory Time, content, format, action, ...
![Page 7: Metadata format and Update Notification Protocol Yuji Nomura Fujitsu Laboratories Ltd. Henning Schulzrinne Columbia University.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f155503460f94c2a5d0/html5/thumbnails/7.jpg)
Other ActivitiesOther Activities DVB-IPI iEPG
text-based straightforward description lack of extensibility on-demand retrieval using HTTP
Proprietary EPGs Replay TV, TiVo
![Page 8: Metadata format and Update Notification Protocol Yuji Nomura Fujitsu Laboratories Ltd. Henning Schulzrinne Columbia University.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f155503460f94c2a5d0/html5/thumbnails/8.jpg)
Requirements for ProtocolRequirements for Protocol On-demand retrieval Simple update notification mechanism Managing metadata status on a server a
nd a client Useful for a content management in general
Delta description methods1. defined by XML schema2. using existing algorithm like “diff”
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SIP Event NotificationSIP Event Notification draft-nomura-cdi-mmusic-mupdate-00.txt Simple: using SUBSCRIBE and NOTIFY Server and client can manage metadata st
atus Delta description Is the protocol suitable for MMUSIC-WG?
WEBI-WG was closed CDI-WG is focusing on requirement works