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Re: Shared Motion - multi-device synchronization and media control for the Web.

From: Giuseppe Pascale <giuseppep@opera.com>
Date: Mon, 15 Dec 2014 12:22:13 +0100
Message-ID: <CANiD0koQdw=H7gx7VNQ2kOQfks4FmusGJRLkKeUe0FfenkeGvw@mail.gmail.com>
To: Ingar Mæhlum Arntzen <ingar.arntzen@gmail.com>
Cc: public-web-and-tv <public-web-and-tv@w3.org>, Njål Borch <njaal.borch@gmail.com>, Dominique Hazael-Massieux <dom@w3.org>, François Daoust <fd@w3.org>
Hi again,
to be more specific on my request below, have you looked at this section in
HTML5? would be good to understand what you think is missing


On Mon, Dec 15, 2014 at 12:18 PM, Giuseppe Pascale <giuseppep@opera.com>
> Ingar,
> thanks for sharing this. As you say, this is already working in browsers
> without any plugin. Can you expand on what do you think should be
> standardized and what would be the advantage of standardization VS the
> library approach you are using today? Have you done an analysis of the
> HTML5 spec (or other specs) to see what's missing and what would need to be
> added?
> cheers,
> /g
> On Fri, Dec 12, 2014 at 1:50 PM, Ingar Mæhlum Arntzen <
> ingar.arntzen@gmail.com> wrote:
>> Dear IG Members
>> We would like to present ourselves to this forum, as we share your
>> interest in improving the Web as a platform for broadcast and multi-device
>> media, and because we have some contributions which you might find relevant.
>> My collegue (Njål Borch) and myself (Ingar Arntzen) are researchers
>> working for NORUT (Northern Research Institute), Tromsø, Norway. Over the
>> last couple of years we have focused on timing, synchronization and media
>> control in multi-device media. Currently NORUT is in charge of the
>> workpackage that deals with this topic in MediaScape, a FP7 EU project
>> aiming to provide a fundament for multi-device Web applications. The
>> consortium includes BBC R&D, Vicomtech, IRT, NEC, NORUT, BR and W3C.
>> To the point: We have invented and developed the concept of  "Shared
>> Motion", a generic mechanism for synchronization and media control in
>> time-sensitive, multi-device Web applications. This mechanism has already
>> been included as fundamental component in the multi-device architecture
>> explored within the MediaScape project.
>> To give you a rough idea what this is about:
>> - Shared Motion synchronizes *globally*, thus multi-device
>> synchronization is not limited to Intranet or specific network carrier.
>> - Shared Motion synchronizes across Internet with errors < 10ms, and
>> works fine even under poor network conditions (e.g. edge - albeit a modest
>> reduction in precision may be expected)
>> - Shared Motion works in any modern Web Browser, no plugins required.
>> - Shared Motion is highly scalable, turning the synchronization of a
>> million companion devices into a realistic scenario.
>> - Shared Motion has been made available for public use by start-up
>> company Motion Corporation. motioncorporation.com
>> Please find enclosed an internal report documenting that Shared Motion
>> synchronizes HTML5 Video across Internet, using unmodified Chrome and
>> Firefox browsers, with end-to-end synchronisation errors in the order of
>> 10ms (i.e., well below frame-rate).
>> Note also that the enclosed report includes links to a demo allowing you
>> to verify this for yourselves.
>> Concerning our interests:
>> We have identified the concept of Shared Motion as a huge enabler for a
>> wide variety of web-based multi-device applications, and we want it
>> (eventually) to become an open standard and included into the Web as a
>> principal component in web-based, multi-device applications.
>> Furthermore, we have identified the WEB+TV IG as a means of bringing this
>> technology to the attention of the W3C community. The W3C representatives
>> in MediaScape has recommended this group, and we have also noted that
>> Shared Motion solves many of the use cases you have already outlined in
>> this forum.
>> So, if you deem this relevant for the group, we would be happy to enter
>> this group and of course discuss this further,
>> Best regards,
>> Ingar Arntzen and Njål Borch, Norut and Motion Corporation
Received on Monday, 15 December 2014 11:23:01 UTC

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