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| List of digital television broadcast standards |
|---|
| DVB standards (countries) |
| ATSC standards (countries) |
|
| ISDB standards (countries) |
| DTMB standards (countries) |
| DMB standard (countries) |
| Codecs |
|
| Terrestrial Frequency bands |
| Satellite Frequency bands |
DVB-I is an open Digital Video Broadcasting specification for Service Discovery and Programme Metadata.[1]
The DVB-I specification[2] defines ways in which devices and displays connected to the internet can discover and access sets of audiovisual media services. These can include services delivered online through fixed and wireless Internet Protocol connections as well as broadcast radio and television channels received over radio frequency networks using traditional cable, satellite, or terrestrial transmissions.
DVB-I defines an online request and response mechanism by which available audiovisual media services can be discovered through a Service List Registry. The specification defines the schema and signalling to describe an ordered Service List of audiovisual media services, with provision for logical channel numbers and service logos, together with technical parameters by which one or more instances of a service can be accessed over various networks. It also defines methods and metadata to enable online access to programme information for channel schedules and programme catalogues that can be presented in electronic programme guides. This allows services to accessed in a coherent and consistent way over diverse networks. Support for regulated service lists provides a method for national regulators or their representatives, operators and trademark licensors to offer a list of trusted, legitimate, authorized, or regulated services.
As an open standard, based on HTTPS and XML, DVB-I can be freely implemented in any application, device, or display, enabling a competitive consumer market. It does not impose any form of presentation on how the information provided is rendered by the client. This may be supported directly by the software operating environment, a native application, or within a web browser. The HbbTV standard for hybrid broadcast broadband television has been extended to provide full support for DVB-I. Media services can be accessed using various established standards, including the DVB suite of specifications for satellite, cable, and terrestrial transmission, and DVB-DASH for online delivery using adaptive bitrate streaming.
History
editThe DVB Project established a working group to begin the definition of DVB-I in October 2017.[3] Work on the commercial requirements for DVB-I began in January 2018 and the terms of reference were agreed in March 2018.[4]
The DVB-I specification was approved by the DVB Project in November 2019[5] [6] and first published as DVB BlueBook A177 in June 2020[7] and as an ETSI standard TS 103 770 in November 2020.[8]
The Service List Registry was established in 2022 to provide a global platform for service discovery using DVB-I.[9]
Work began in 2023 to enable interoperability of DVB-I with 5G mobile network standards.[10]
The latest release of the DVB-I specification was published in February 2024 as DVB BlueBook A177 Rev. 6.[11]
Pilot services
editItaly
editItalian broadcaster Mediaset launched a DVB-I proof-of-concept in 2019[12]. Following the completion of two phases, a commercial trial was announced in September 2023, with commercially available receivers.[13]
Germany
editA multi-stakeholder group of broadcasters, vendors, service providers and others launched a pilot DVB-I service in Germany in 2022. A report on the first phase of the pilot was published in May 2023.[14] The pilot won the 2023 IBC Special Award for Innovation[15] and a second phase was announced in September 2023.[16]
Technical description
editClient
editA DVB-I client may be integrated into the user interface of a device such as a television or set-top box or may be part of an application on devices such as a mobile phone or tablet.
Service
editA DVB-I service is any service which may be discovered using the mechanisms defined in the specification, available using one or more delivery systems including DVB-DASH and traditional DVB cable, satellite, or terrestrial transmissions.[17] A service may be received by devices without a broadcast tuner or coaxial connection, including mobile devices, or on devices with a traditional DVB-C/S/T/IPTV receiver or using SAT>IP. A service may only be accessible under certain conditions, such as location, rating restrictions, conditional access, or subscription package. It may be linear or on-demand, and may include audio, video, subtitle, or access components, and may have linked applications.
Service Instance
editA DVB-I service instance refers to the delivery of a DVB-I service using a single delivery mechanism and provides related information to enable it to be accessed by a DVB-I client.
Service List
editA DVB-I service list may list services from one or more content providers. A service list provider may manage the service list and provide service ordering and numbering information. The service list may be targeted at a particular platform brand, geographic region, language, or genre. Clients marketed under a particular platform brand may use a single service list for that platform. Clients may offer a selection of service lists and present the user with a view of services from only one service at any one time. Alternatively, clients may combine several service lists and present them, with or without filtering options.
Service List Registry
editA DVB-I Service List Registry provides a DVB-I client with a list of one or more Service List Servers in response to a request that may include query parameters. A service list registry provides an HTTP endpoint at a known URL and in response to a request query returns a list of service entry points. A service list registry may be operated by or on behalf of various kinds of organisations, such as device manufacturers, national or regional regulators, an operator or platform brand, third-party service list aggregators, or as a central service list registry for all compatible clients, providing information on a wide set of service lists.
Service List Server
editOne or more servers may deliver a Service List to a DVB-I client. A Service List Server may aggregate service list fragments from multiple content or service providers.
Content Guide Server
editOne or more servers may respond to requests from a DVB-I client for content guide data. The content guide server or servers for an individual service are referenced in the service list entry for that service.
Stream Server
editOne or more servers may be involved in the delivery of audiovisual streams, including a Playlist Server, an MPD Server providing the Media Presentation Description for DVB-DASH services, and a Stream Server, including Multicast Gateways, that deliver DASH media segments to a DVB-I client.
See also
editReferences
edit- ^ "DVB-I web site". dvb-i.tv.
- ^ "Service Discovery and Programme Metadata for DVB-I - DVB". dvb.org.
- ^ "Kicking Off DVB Internet TV Services" (PDF). DVB Scene (51): 6–7.
- ^ "DVB launches new DVB-I initiative for open internet". SVG Europe. 5 March 2018.
- ^ "DVB Approves Internet-Centric Linear TV DVB-I Specification". IBC.org. 13 November 2019.
- ^ "DVB approves new specification for linear TV delivered over the internet". TVB Europe. 13 November 2019.
- ^ Service Discovery and Programme Metadata for DVB-I: DVB Document A177 (PDF) (Rev.1 ed.). DVB. 2020.
- ^ ETSI TS 103 770 V1.1.1 (2020-11): Digital Video Broadcasting (DVB); Service Discovery and Programme Metadata for DVB-I (PDF). ETSI. 2020.
- ^ "AV services registry launches". Advanced Television. 16 May 2022.
- ^ Bradbury, R; Gabin, Gabin; Stockhammer, T (2023). "DVB-I Service Delivery Over 5G Systems". IBC Technical Papers.
- ^ Service Discovery and Programme Metadata for DVB-I: DVB Document A177 (PDF) (Rev.6 ed.). DVB. 2022.
- ^ "DVB-I Services: Italy". dvb-i.tv. 18 November 2021.
- ^ "Vestel announces the first DVB-I TV in Italy: test with Mediaset". Italy24.press.
- ^ "Germany: DVB-I Pilot phase 1 success". Advanced Television. 22 May 2023.
- ^ "Innovation Award Winners". ibc.org.
- ^ "IBC 2023: German DVB-I Pilot launches second phase". Broadband TV News. 12 September 2023.
- ^ "Service List Registry offers simple service selection on any screen" (PDF). CSI Magazine: 30–31. Autumn 2022. ISSN 1467-5935.
External links
editCategory:Digital Video Broadcasting Category:Television transmission standards