Intensity Extreme - MacOS High Sierra

I updated my apple computer to High Sierra and Black Syphon stopped working with the new updates.

I was using for my streaming: Intensity Extreme > Black Syphon > OBS.

Can somebody recommend me a free software that works with High Sierra, Intensity Extreme and OBS?

Read the manual of Desktop Video.. You need to fix some security issues in Sierra before your BMD capture device will work again.