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Re: HTML5 Last Call May 2011 & DASH/Adaptive Streaming

From: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
Date: Wed, 16 Feb 2011 18:29:47 +1100
Message-ID: <AANLkTimg4iaN+wKu0O6be238_akjJvUQ-_MDDpKH6m9r@mail.gmail.com>
To: Mark Watson <watsonm@netflix.com>
Cc: Philippe Le Hegaret <plh@w3.org>, "Ali C. Begen (abegen)" <abegen@cisco.com>, Glenn Adams <glenn@skynav.com>, Jean-Claude Dufourd <jean-claude.dufourd@telecom-paristech.fr>, "Richard Maunder (rmaunder)" <rmaunder@cisco.com>, "public-web-and-tv@w3.org" <public-web-and-tv@w3.org>
On Wed, Feb 16, 2011 at 5:03 PM, Mark Watson <watsonm@netflix.com> wrote:
> On Feb 15, 2011, at 4:59 PM, Philippe Le Hegaret wrote:
>> On Tue, 2011-02-15 at 18:40 -0500, Ali C. Begen (abegen) wrote:
>>> I think folks need to agree on the container format not the codec type. A good container format will be good for several codecs that exist today and will yet to come.
>> My understanding is that the IP issues surrounding the codec types are
>> also surrounding the container formats and the streaming technologies.
> IANAL but I don't think that is quite true. To my knowledge there are no IP issues with the ISO Base Media File Format (ISO/IEC 14496-12) which is one of the more widely used container formats.

I believe it is the MPEG-2 systems patent pool that is relevant here:

And MPEG-4 systems still has a patent pool, even though licenses are
not offered any more.

Best Regards,

> For "streaming technologies", it is my hope that DASH will be Royalty-Free and some companies have already stated that intention in respect of their IPR.
> This is a very different state of affairs from codecs such as H.264, for example.
> ...Mark
>> So, I'd be surprised if any agreement was reached within the HTML
>> Working Group on those topics. I can't imagine a different conclusion
>> that the H.264/Theora discussion at this point. In any case, as Glenn
>> alluded to, HTML has been technology neutral since the beginning. Unless
>> I'm mistaken, we don't require implementations to support a specific
>> image format.
>> Philippe
Received on Wednesday, 16 February 2011 07:30:40 UTC

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