The filter should automaticaly load when switching the scenes. Between scene A and B, (going to preset B) and between Scene A and B (going to preset A)
I got this working, (did not work using the fading transition).
But if I swith from scene C ( a scene with a fixed picture) to Scene A , I briefly see scene B, this freezes for 2 seconds (I set 2000 ms) before scene B becomes visible.
This occurs of course only if the scene before Scene C was Scene B.
Hard to explain but I hope you got the picuture.
BTW, there is a function in the PTZ camera called "image freeze" this does exactly what I want, but only using SDI or HDMI out. And I use NDI or RSTP via UTP.