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Video Breakthroughs
Monitoring innovations in post-production, head-end, streaming, OTT, second-screen, UHDTV, multiscreen strategies & tools
Curated by Nicolas Weil
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How Chromecast uses UPnP and DIAL protocols

How Chromecast uses UPnP and DIAL protocols | Video Breakthroughs | Scoop.it

DLNA + UPnP allows you stream media from mobile phones, laptops to compatible HDTVs. But you will find plenty of steps involved. Mostly, these solutions are complex enough for any typical home user. But Chromecast uses UPnP and DIAL protocol to eradicate intrication.

 

DIAL (Uncover And Launch Protocol) uses UPnP (Universal Plug N Play) protocol for network element discovery. Upnp multicasts and probes for available audience and senders on the given local Wi-fi compatability network. So basically moment clicking Chromecast  icon on Chrome tab or android device, it probes and finds out First screen DIAL server (Chromecast device blocked to High definition tv within this situation). Once discovered, it synchronizes information about how for connecting into it.

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DLNA premium video support big step for connected home

DLNA premium video support big step for connected home | Video Breakthroughs | Scoop.it

The DLNA’s support for streaming of premium content within the home, announced at IBC and initially for Europe only, is a major milestone in the evolution of connected home services. The move might have come sooner, but DLNA was waiting for maturation of the key underlying technology, DTCP-IP (Digital Transmission Content Protection over IP) to ensure safe and yet transparent delivery of content over IP networks. DTCP itself evolved in the mid 1990s, developed by chip maker Intel in conjunction with four major CE (consumer electronics) companies, Hitachi, Panasonic, Sony and Toshiba.

 

Apart from satisfying content owners, there is another important reason for DLNA’s adoption of DTCP-IP for copy protection around the home, which is to enable consumers to exercise their digital rights to the full. To do this, DTCP-IP enables operators to enforce multi-level rights dependent on the content.

 

DTCP-IP allows consumers to copy and record content subject to permission from the operator or rights holder. The rights are specified in a licence issued by the Digital Transmission Licensing Administrator (DTLA), details of which can be obtained from its website. The idea is that the licence encodes rules into the content, so that, for example, free-to-air terrestrial broadcasts could be recorded and copied without any restriction. In the case of subscription channels, consumers may be allowed to record content for their own subsequent viewing, but not copy it for sending to friends. Then premium content such as movies or live sports purchased on demand or pay-per-view via a specific transaction would probably be fully protected against recording and copying.

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Zeebox changes channels for good with remote control feature

Zeebox changes channels for good with remote control feature | Video Breakthroughs | Scoop.it

The latest release of the zeebox television companion app adds a remote control feature. Virgin Media subscribers in the United Kingdom will be able to use the zeebox app on an Android smartphone as a remote control, while zeebox will automatically recognise which channel they are watching. Similar features will be coming to Sky+ subscribers and users with an Apple iPhone or iPad.

 

Anthony Rose, the co-founder and chief technology officer of zeebox, told informitv that zeebox connects over a local wi-fi network and uses DLNA Digital Living Networking Alliance and UPnP Universal Plug and Play protocols to query what is playing on the device and can control any number of set-top boxes on the same network, collectively or individually. 

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Integration of UPnP with HTML5

Integration of UPnP with HTML5 | Video Breakthroughs | Scoop.it

This document describes how an HTML5 UA can fulfill the role of the User Interace (UI) application in a UPnP architecture by mapping existing HTML5 APIs to equivalent UPnP functions. New HTML5 APIs are proposed where required.

 

HTML5 and UPnP Integration Overview

 

UPnP [UPnP] defines a peer-to-peer network architecture providing applications with standards-based connectivity to devices and services in a local area network. An HTML5 [HTML5] UA can implement UPnP functions, thereby enabling Web applications to access home network services. This specification describes the HTML5 UA functions required for it to act as an application in a UPnP network.

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