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

From: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
Date: Thu, 18 Dec 2014 17:00:06 +1100
Message-ID: <CAHp8n2nzrD_TiQshBPLBGdFRzhNQyhV8tE+148Km4kTNPTHnuA@mail.gmail.com>
To: Giuseppe Pascale <giuseppep@opera.com>
Cc: Dominique Hazael-Massieux <dom@w3.org>, Francois Daoust <fd@w3.org>, Njål Borch <njaal.borch@gmail.com>, public-web-and-tv <public-web-and-tv@w3.org>, Ingar Mæhlum Arntzen <ingar.arntzen@gmail.com>
In addition to this, there is also the web animations spec that should be
of interest: www.w3.org/TR/web-animations/ .

Best Regards,
On 15 Dec 2014 15:24, "Giuseppe Pascale" <giuseppep@opera.com> wrote:

> 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
> http://www.w3.org/html/wg/drafts/html/master/embedded-content.html#synchronising-multiple-media-elements
> On Mon, Dec 15, 2014 at 12:18 PM, Giuseppe Pascale <giuseppep@opera.com>
> wrote:
>> 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 Thursday, 18 December 2014 06:00:34 UTC

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