[FFmpeg-devel] [PATCH v2 00/13] YUVJ removal

[Vittorio Giovara]

On Fri, Oct 20, 2023 at 8:14 AM Ronald S. Bultje <rsbultje at gmail.com> wrote:

> Hi,
>
> On Sat, Oct 14, 2023 at 11:16 AM Vittorio Giovara <
> vittorio.giovara at gmail.com> wrote:
>
> > On Sat, Oct 14, 2023 at 9:11 AM Lynne <dev at lynne.ee> wrote:
> > > colorspace doesn't make it impossible to introduce all that is needed.
> > > It's a cleaner codebase that we can extend.
> >
> > * that only works on a subset of colorspaces.
> > Last time I checked, it would have required a massive lift to support
> > anything with constant luminance or the icpct formats.
> >
>
> Not at all related to the patchset anymore... But I'm curious what's
> missing here, could you elaborate? It would be nice to have that documented
> somewhere.
>

basically the constant luminance colorspaces (bt2020c), the various ICtCp
variants, and all the HDR transfers like hlg or pq (which, to my
understanding, cannot be easily added to the filter due to how the gamma
function is built)

tbh while it's great that this functionality exists *somewhere* in ffmpeg,
this is really something that should belong to the scaler filter (whichever
implementation)
-- 
Vittorio