[FFmpeg-user] Feature improvement request for 'geq' filter to support functions

[Paul B Mahol]

On Mon, Jun 3, 2024 at 3:30 PM Lee Mitchell <npdmailing at gmail.com> wrote:

> Hi, Paul.
>
> First, thanks for the advice.
> Erm..thing is that I totally don't understand what you are saying as dumb.
> You mean, the expression should be...
> [1:v]geq=r='r(X,Y)':a='if(between(t\,0\,9),alpha(X,Y),0)'[alpha]; ?? which
> is not working.
> Could you show me the exact syntax for me?
>

There is no 't' variable in geq filter expression documentation.
Use the 'T' one instead.


>
> 2024년 6월 3일 (월) 오후 3:17, Lee Mitchell <npdmailing at gmail.com>님이 작성:
>
> > Hi.
> >
> > When I use filter_complex syntax below, I get an error that cannot
> proceed.
> > "-filter_complex
> > "[1:v]geq=r='r(X,Y)':a='if(between(t,0,9),alpha(X,Y),0)'[alpha];"
> > then
> > " Unknown function in 't,0,9),alpha(X,Y),0)'"
> > Seems geq filter not support generic function parsing.
> > Please look into it.
> >
> > Have a good day.
> >
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