4chan grid-based image gallery with zoom mode support for threads that allows you to browse images, and soundposts (images with sounds, webms with sounds) along with other utility features.
Damn to each their own I guess. By any chance, can you upload a video so I can see how it looks like for my reference?
The recent updates made it more convenient to use on mobile; requires less messing with the code to work well.
I know, it's not meant to be used there, but imo it's the best solution