Since no one is going ahead and posting more guess I will ¯\_()_/¯
I'd like to introduce yall to Kerblob, or just Ker. This artist makes 3D retro animations with generally silly or odd themes (in a good way!).
The thing that is so impressive about their videos is the effort that goes into them. To those unfamiliar with the process of creating videos like this, it can seem simple because, well, it looks simple and cute! But its not. It is pretty difficult, and lots of stuff goes into this.
For example, their cute video called "i love you"
Cute isnt it?
The fish-eye stretching on that background doesnt just happen. It has to be warped either manually as a mesh, or automatically with a low FOV on the camera or with something similar to Optics Compensation in After Effects. Those last two processes would require the background, which is animated, to be rendered separately and processed. Then there is the chromatic aberration on it. That's the separating of the red and blue on the edges. Usually, this would happen in a glass lens, but this has to be done manually, most likely in After Effects, which isnt always the easiest thing depending on what you want.
Look at the hearts.
That is not a standard pattern at all, and each heart has a different set of blocks that disappear. That was attention to detail! Now, I may be overcomplicating it, as it could simply be a transition preset from somewhere, but it could also be that it was done by hand. Either way, the attention to detail is neat.
And look at pinkie. Did you notice how she first pops in with no head or tail?
Isnt that just silly? and that was intentionally done!
The text that appears and flickers subtly, then slides off screen, that doesnt just happen on its own!
And the little >< when Twilight kisses the screen is also manually done.
And the screen filtering. Like, what? I dont even know where to begin thinking how that one was done
Lastly, the perfect loop of the music. As someone with lots of experience in audio editing, looping something that well isn't something a beginner can easily do. This Kerblob knows their stuff!
Before this post gets too long with me gushing about this creator, why dont you go check them out for yourself, and maybe even subscribe to them because an upload from them in your feed might just brighten your day, I know it sure does mine!