[foms] W3C activities on HTTP adaptive streaming - Inform and ask opinion.

Giuseppe Pascale giuseppep at opera.com
Thu Dec 9 04:02:26 PST 2010

Silvia, all,
I would like to take the chance of this discussion thread to inform you  
about the upcoming W3C "Web and TV" workshop in Berlin (8-9/2/2011)


I think this would be a good chance to discuss such a topic.
I would suggest that someone from this group presents the outcome of the  
discussion so far.
If the topic will be considered by the PC of interest (as I expect) we  
will then have a chance to discuss it with representative from many  
different industries.

More information on the deadlines can be found on the Call for Papers  
pointed above.
If you have more questions feel free to contact me.

Best regards,

On Thu, 02 Dec 2010 15:05:43 +0100, Silvia Pfeiffer  
<silviapfeiffer1 at gmail.com> wrote:

> Hi Francois,
> A third means of solution has been discussed in the FOMS group during
> recent months: namely the exposure of quality of service statistics to
> JavaScript through the video element by the browsers. This will allow
> anyone to implement their own adaptive streaming solution without
> restriction to a proprietary solution or restriction to the algorithm
> implemented in a browser for when to switch between streams. It will
> allow further innovation and seems currently the preferred first step.
> Also, you might have noticed initial notes at
> http://wiki.whatwg.org/wiki/Adaptive_Streaming working towards
> solutions.
> Cheers,
> Silvia.
> 2010/12/3 Francois Daoust <fd at w3.org>:
>> On 12/02/2010 11:07 AM, Raphaël Troncy wrote:
>>>> are you saying that the W3C is considering starting a WG for adaptive
>>>> HTTP streaming?
>>> This has indeed been discussed during last TPAC (last month). I'm  
>>> cc-ing
>>> François Daoust, staff contact in W3C, that might lead this activity.
>> "Starting a WG for adaptive HTTP streaming" is too positive a statement  
>> at
>> this point. We make the same analysis as others, in other words: it is
>> important for the success of video on the Web (through the <video> tag),
>> there are different proprietary solutions out there, different
>> standardization organizations that also work on the topic, but no
>> royalty-free solution in sight.
>> HTTP adaptive streaming can be addressed at the application level  
>> through
>> the definition of a manifest file format, or at the network level  
>> through
>> improvements to HTTP. W3C would welcome the work on a manifest file  
>> format
>> and its associated processing model, provided there is enough support  
>> from
>> its members involved in the field. People are, I think, looking for
>> convergence towards a common open solution much more than for the  
>> creation
>> of yet another standard, which is fine.
>> This got discussed a bit at TPAC, and keeps coming up in discussions.  
>> We put
>> our members in touch when they show interest in HTTP adaptive  
>> streaming. As
>> of today, there is no concrete proposal within W3C to start  
>> standardization
>> work, or public threads on the topic I could point you at.
>> I encourage people to bring this topic to the upcoming Web and TV  
>> workshop
>> in Berlin in February:
>>  http://www.w3.org/2010/11/web-and-tv/
>> (the topic is of particular relevance for TVs because of constraints  
>> such
>> devices have in terms of the number of technologies they can integrate).
>> This could also be discussed within the upcoming Web and TV Interest  
>> Group
>> (for clarity, note an "Interest Group" cannot develop rec-track
>> specifications), once created. Mailing-list is public-web-and-tv at w3.org,
>> archived at:
>>  http://lists.w3.org/Archives/Public/public-web-and-tv/
>>>> If that is the case, I would very much think that the
>>>> discussion and conclusions that we have come up with here would be
>>>> well placed as input into that WG. I believe Jeroen, who has very much
>>>> taken the lead in pulling all the information together here, may even
>>>> have some very good draft proposals as starting points.
>>> +1!
>> If something gets started, the possibility to use existing works as  
>> starting
>> point would be extremely useful, indeed. Raphael had pointed me to the  
>> workshop where this got discussed.
>> Francois.
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Giuseppe Pascale
TV & Connected Devices
Opera Software - Sweden

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