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

[Lee Mitchell]

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?

2024년 6월 3일 (월) 오후 10:29, Lee Mitchell <npdmailing at gmail.com>님이 작성:

> 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?
>
> 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.
>>
>