Re: [PATCH 00/14] media: Add V4L2 H.264 stateless encode and VC8000E support

[Paul Kocialkowski]

Hi,

Le Thu 24 Sep 26, 15:44, Nicolas Dufresne a écrit :
> Le jeudi 24 septembre 2026 à 21:38 +0200, Michael Nazzareno Trimarchi a écrit :
> > I would like to ask about the status of the entire proposal and uapi change.

By the way (in case you missed it Michael), this topic was discussed
at the 2026 Linux Media Summit and you can find my slides at:
https://www.paulk.fr/talks#2026-linux-media-summit-v4l2-stateless-video-encoding-uapi-progress-update

The discussion helped clarify a number of points and expectations for
the next iteration of the proposal, which I am currently working on.
It involves some rework of core support and helpers but the technical
side remains rather similar.

> From my perspective, the main part missing the the V4L2 m2m stateless encoder
> spec. We made one for stateful decoder/encoder and stateless decoder, and that
> made a huge different in interoperability.

Yes adding the spec is part of the ongoing work for v2. It will be a mix
of what is already done for stateful encoders with more flexibility and
specific aspects for the stateless aspect.

By the way if you have ideas about specific problems with the stateful
API that should not be reproduced in the stateless one, feel free to
mention them.

> A second implementation, not just a variant of the same brand would also be
> nice.

I still have it in mind to add support for the Allwinner encoder based
on my earlier stateful-ish attempt. Hopefully that work can be funded.

All the best,

Paul

-- 
Paul Kocialkowski,

Independent contractor - sys-base - https://www.sys-base.io/
Free software developer - https://www.paulk.fr/

Expert in multimedia, graphics and embedded hardware support with Linux.

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