[FFmpeg-user] Requesting colormatrix advice

[Paul B Mahol]

On Tue, Nov 7, 2023 at 3:09 PM <markfilipak.imdb at gmail.com> wrote:

> On 11/7/23 08:39, Paul B Mahol wrote:
> > On Tue, Nov 7, 2023 at 2:22 PM <markfilipak.imdb at gmail.com> wrote:
> >
> >> On 11/7/23 06:55, Phil Rhodes via ffmpeg-user wrote:
> >>>    On Tuesday, 7 November 2023 at 11:48:24 GMT, <
> >> markfilipak.imdb at gmail.com> wrote:
> >>>
> >>>>    I think it sets the color tags on the _input_
> >>> I'm not so sure ...
> >>
> >> I tried it. The saturation was still there.
> >>
> >> What exactly you tried?
>
> set ARGS=-map 0:v -map 0:a:1 -map 0:a:0 -vf
> setparams=range=tv:color_primaries=smpte170m:color_trc=smpte170m:colorspace=smpte170m,separatefields,setdar=16/9
>
> -c:v libx265 -x265-params crf=18 -c:a copy
> ffmpeg -ss 10:37.846 -to 11:09.335 -i "%SOURCE%" %ARGS% "%TARGET%"
>
> It seems to me that if 'setparams' is marking tags in the SOURCE instead
> of the encoder, it would
> not be in '-vf' and would not require transcoding. It would be a '-bsf:v'.
> So, I don't know what
> 'setparams' does. Apparently nothing.
>

That is a bug.
Workaround is to use: -colorspace -color_range etc output options directly.


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