I used this website to convert a video file to a webp, and then uploaded the resulting file to catbox.moe. Finally, I submitted the catbox link as a link post.
The original video was a short (like six seconds?) soundless clip though. I’m not sure how well that method would work with something larger, or if I wanted to have sound. Hope that helps!
I don’t think it is from one. The artist is lvl, if you are looking for more of their work.