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Re: [Wish] WG recharter

Bernard Aboba <bernard.aboba@gmail.com> Mon, 17 April 2023 18:07 UTC

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From: Bernard Aboba <bernard.aboba@gmail.com>
Date: Mon, 17 Apr 2023 11:06:47 -0700
Message-ID: <CAOW+2duw_8U7+2K5Yesxcm1bRuCf4EGwp+8P+Y6f0tQfc1mobA@mail.gmail.com>
To: Juliusz Chroboczek <jch@irif.fr>
Cc: Sergio Garcia Murillo <sergio.garcia.murillo@gmail.com>, Sean Turner <sean@sn3rd.com>, WISH List <wish@ietf.org>
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Subject: Re: [Wish] WG recharter
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Juliusz said:

"I think that's an important point.  In WHIP, Sergio has been careful to
stick to signalling, and defer all other protocol features to existing
standards.  That's what makes WHIP so eminently implementable."

[BA]  Except that there *are* "eminently implementable" standards, such as
CMAF for containerization and MSE API (for rendering).  To prove the point,
CMAF is supported in early MoQ drafts and browser clients demos supporting
MSE have implemented "rewind".  If WebTransport were swapped out for
RTCDataChannel, those same demos would run in Chromium.

So the protocols have already been defined and implemented, and running
code already exists.  In that sense, the remaining functionality is largely
in the realm of "signaling" (e.g. how to request CMAF over RTCDataChannel,
or how to request "rewind").



On Mon, Apr 17, 2023 at 10:33 AM Juliusz Chroboczek <jch@irif.fr> wrote:

> > Regarding the specific DRM and rewind functionalities, there is not a
> standard
> > way of implementing them that we can reuse here.
>
> I think that's an important point.  In WHIP, Sergio has been careful to
> stick to signalling, and defer all other protocol features to existing
> standards.  That's what makes WHIP so eminently implementable.
>
> -- Juliusz
>

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