[FFmpeg-devel] [PATCH] libavfilter: zscale performance optimization >4x

[Victoria Zhislina]

Paul, I've got exactly the same feelings on zing threading usage myself and
decided to go along the standard ffmpeg threading route.
It looks more consistent here.
Megathanks for reviewing my patch, I've fixed everything you've mentioned
and even more.

On Tue, Feb 22, 2022 at 11:15 AM Paul B Mahol <onemda at gmail.com> wrote:

> On Tue, Feb 22, 2022 at 9:15 AM Paul B Mahol <onemda at gmail.com> wrote:
>
> >
> >
> > On Tue, Feb 22, 2022 at 6:25 AM Lynne <dev at lynne.ee> wrote:
> >
> >> 19 Feb 2022, 14:58 by niva213 at gmail.com:
> >>
> >> > By ffmpeg threading support implementation via frame slicing and doing
> >> > zimg_filter_graph_build that used to take 30-60% of each frame
> processig
> >> > only if necessary (some parameters changed)
> >> > the performance increase vs original version
> >> > in video downscale and color conversion  >4x is seen
> >> > on 64 cores Intel Xeon, 3x on i7-6700K (4 cores with HT)
> >> >
> >> > Signed-off-by: Victoria Zhislina <Victoria.Zhislina at intel.com>
> >> >
> >>
> >> Can't you patch such a feature into the upstream instead?
> >>
> >
> > zscale already have own threading ability, but is very hard to use it,
> > last time i tried.
> >
>
> I mean zimg.
>
>
> >
> >
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