How to use IMB_BLEND_ADD in VideoTexture?

As the title says, how can I use IMB_BLEND_ADD in the VideoTexture module? I try it and it won’t work? It doesn’t seem to work on ImageFFmpeg or am I just doing it wrong?

I can do filters like FilterGray, but just not the blending stuff as mentioned. Can anyone please show me some code on how to exactly do IMB_BLEND_ADD? I’m a little stumped.