Here's a modded DLL for the game that makes it play like Home Mate during H.
Move your mouse, how fast you move your mouse is how fast the action goes.
Works while in desktop background mode as well!
Unfortunately some of the animations are wacky, so it's not the greatest experience.
Make sure to back up your Assembly-CSharp DLL before replacing.
Edit: It now works for videos as well.
For video loops to work properly, make sure to do the following:
Use HandBrake (free program) to convert any gifs, webms, or videos in general.
You'll want to make sure that they are 60 FPS, with no audio tracks, and that storage size is the same as display size.
Also make sure to use max quality and encoder preset very fast.
This'll prevent the loops from jumping/hitching.
By making sure storage size is the same as display size, you make sure it won't get stretched.
If your gifs won't convert with Handbrake, use gif2mp4.
You can get loops from pretty much anywhere, load them as video with this method, and have those play with manual gameplay.
They can also be used as a wallpaper and still function as such.
Oh yeah, right-click to change to a random video/live2D character.