Get this here: https://motionarray.com/stock-motion-graphics/black-and-gold-prism-background-4k-86620
This stock motion graphic features many black metal rectangular prisms, line with gold, moving up and down in a random pattern. The depth of field blurs out the prisms in the back and the reflecting light flares off of the gold trim of the prisms. This would make an excellent background for your motion graphics projects, or a really cool element in your VJ sets. Available in 4K.
Black And Gold Prism Background 4K Stock Motion Graphics