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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

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 Monday, 15 December 2014 11:23:01 UTC

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