This looks awesome. Very quickly read the Github page. It does seems to need a webserver. Would i just drop the html file in a smb shared folder and open it in a webbrowser, could that work ? Apologies for asking weird questions.

The main use for it is as a webpage you can serve with any web server. If the folder for your smb video share is also served with any web server, drop player.html in there, access it from the webserver URL, and it'll work great.

It is also a PWA though, so you can install the player (e.g. from my github pages test version: https://pseudosavant.github.io/player.html/player.html), and then use it as a local video player for any video file in your OS, like directly from the smb share if it is mounted.