LocalVideoWall is a single html static file that allows you to specify a few local video files and it display a wall of videos. Nothing is uploaded to any server. Everything is kept locally in your browser. This works offline if you save the page first.
There's not many bells or whisles. This was just a little experiment to build the most lightweight tool for this without using external dependencies.
Pull requests to improve or add functionalities are welcome.
This tool is part of the F² MicroTools suite. A collection of tools that that are tiny, with no dependencies and typically just do one thing.