[FFmpeg-devel] [PATCH 6/6] avcodec: add vvdec H.266/VVC decoder

Nuo Mi nuomi2021 at gmail.com
Tue Dec 22 19:02:04 EET 2020


Hi Lynne,
Thanks for the comments.
We only have a small patch for the vvdec wrapper. All other codes (raw
demuxer, cbs reader, parser, and cbs writer in the future) will benefit the
native decoder and the vvc ecosystem.

I do not think av1 is the savior. No matter how it promised you, if we only
have one codec to choose from, it will be a disaster for all of us.
But, if you and the ffmpeg tech committee decided to reject all vvc patches
in the future, I can accept it and stop work on this.

BTW, do you know the detailed plan for av1 native decoder? will we port
dav1d back or implement a new one?

thanks



On Wed, Dec 23, 2020 at 12:10 AM Lynne <dev at lynne.ee> wrote:

> Dec 21, 2020, 07:07 by nuomi2021 at gmail.com:
>
> > you can download test clips here:
> >
> https://www.itu.int/wftp3/av-arch/jvet-site/bitstream_exchange/VVC/under_test/VTM-11.0/
> >
>
> Honestly, I'm not sure about this patch. Its an external library decoder,
> which
> doesn't help us very much, and its for a codec competing with another codec
> (AV1) for which we don't really have a native decoder for yet. Not to
> mention
> some of us were involved with the effort to standardize and/or write a
> decoder
> for AV1, so there's also a personal element to not wanting VVC to have any
> success.
>
> So I'm kind of against this particular patch as-is. I'd be okay with it
> being a native
> decoder built into our codebase. But as-is, this serves nothing to help the
> project, but only corporations who invested into the codec and want to see
> some return on their investment from enforcing licensing on our users.
> And no one is even really using this codec at the moment.
>
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