There isn’t any more to the original video, it was done in one take and not edited, just converted to GIF. If you want to be able to stop it and play back specific sections, or look at it frame by frame, you can use your web browser to download the GIF animation from this page and load it into any app that can play back a GIF animation.
For example, you can drop an animated GIF into Photoshop, and if you open the Timeline panel (Window > Timeline), it will provide playback controls.
It looks like hand painted artwork on stretched canvas. I am not saying that it couldn't be done with Photoshop. but it would take multiple steps, and take a fair bit of skill and a lot of talent. There are elements that you could certainly do with Photoshop, like the coloured spatter, but some of that was applied wet enough to cause those runs, and that would complicate that aspect. No, I wouldn't want to have to duplicate it digitally.
That would be my guess. If it is all illustrated, then somebody did a particularly good job of it. I checked the perspective (with Lazy Nezumi) and that looks about right, and the shadows and gradients are spot on. Plus, the running colour from what looks like very wet water colour. If that is illustrated, then my hat is well and truly off to whoever did it!