Sometimes doing streaming business you come across a "venue" that has a video projector from the 90s that accepts through HDMI only one screen mode that is nowhere to be listed, or an AV system with an esoteric video copy protection protocol or just some old school movie projector color space madness.
When that is the case, I pull this sucker from the splitter case and just run my video signal through it, and due to some black magic voodoo every piece of prior unwilling video projector or screen equipped with HDMI just suddenly works. With the same signal. I don't know why. It's not what it's made for and I don't care.