Here is the first test on my end of the program. Classic PMV that inspired that cringy brony pride song that I have never let myself watch fully through. I still haven't tested avatars yet (as the comment section I chose was pretty large). It's primitive and my video conversion was a bit sloppy on top of that as I only had a mkv but I like where you are going with this.

>I don't know how much you'll want to help with development. But I am not sure about colaborating on this over imageboard Like we can still post update in /go/ but I don't know if it wouldn't be just making visual mess eventually.
>gihub, gitlab, gitgud, gitea
Though I don't mind a visual mess passing around source and such in the slightest but if it works easier for you to set it up on a git that is perfectly fine. Probably better for record keeping too.

As for development, my roll would probably be limited to testing it though I may try my own hand at something like the CSS and it may suck worse : ) or other aspects of the webpage on the near term as I teach myself

I have still need to answer your other questions but I am a bit pressed for time at the moment so that'll come later.