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Re: [Wish] WG recharter

Sergio Garcia Murillo <sergio.garcia.murillo@gmail.com> Mon, 17 April 2023 18:14 UTC

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From: Sergio Garcia Murillo <sergio.garcia.murillo@gmail.com>
Date: Mon, 17 Apr 2023 20:14:07 +0200
Message-ID: <CA+ag07bms3AXfP7-D0M6dBJKQyNHfc8OAFGNUKO9vSfVqTitEw@mail.gmail.com>
To: Bernard Aboba <bernard.aboba@gmail.com>
Cc: Juliusz Chroboczek <jch@irif.fr>, Sean Turner <sean@sn3rd.com>, WISH List <wish@ietf.org>
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Subject: Re: [Wish] WG recharter
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So you are proposing sending CMAF over datachannels for WHEP? Appart of
being a terrible idea from my point of view (use MoQ intead), there is no
standard "CMAF over datachannels" media protocol we can reference.

El lun, 17 abr 2023 20:07, Bernard Aboba <bernard.aboba@gmail.com> escribió:

> 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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