More a test than a real video but I added some music, so let’s call it a video.
(Sorry if the soundtrack explodes at the end… Not my fault, Blender did it!)
Rendered in Cycles. Around 3 seconds per frame on GPU at only 10 samples. No post-processing at all. I used only one procedural material on the cubic particles and on the “tunnel”.
The remake is already planned. There are so many things “the director” wants to redo differently than they aren’t worth mentioning.