I think you can do it, all you need is the inside LEDs right?
The same effect, maybe, but it won't be as smooth an animation, he simply has way more LEDs (more than double).
I could if I put my mind to it and had the time (I don't have the time). That involves getting the materials/tools needed to do surface mount soldering, and learning how to do surface mount soldering. All of those LEDs are surface mount, and he did some serious work on the look of the disc itself both inside and out. He has a workshop, I don't, I'm doing all of this stuff on the table right behind my gaming computer in the second bedroom of my apartment. What he's doing is just on an entirely different level. I'd love to be able to do that, and if I had the resources to do it, I probably would, but I definitely don't.
Here's another video of his work, an earlier video showing just the LEDs in action, you can see that it's just a small wall forming the ring, with the surface mount LEDs mounted to it.
My plans for the inner ring will put 16 LEDs in there to get the same effect, but I'm not sure how to do the diffusion yet, the blue LEDs shine through the build in diffuser way too easily. Got some testing to do to figure out the best way.