never heard of it, but I don't see why it wouldn't work, it's a regular GLFW driven window with OpenGL 4.3 graphics
Viewing post in Ultimate Shader Playground v0.55 (Early Access) comments
It was great to record the virtual video from another app, like https://www.lightjams.com/spout-recorder.html
i would love to send the shaders into other softwares, like https://www.hypertonal.net/cathodemer/
or e.g. Adobe premiere, which have all support for input and ouput of generated materials via spout. It would be a great addition. Anyways, i think i am drifting away from your main focus ;)