I’d rule out k8s if you’re looking for simple administration.

Not to state the obvious one, but there’s always the Raspberry Pi.

The supply has gotten better on those, so you can probably pick one up in your price range, and the power draw is super minimal.

Fair.

In addition to the other suggestions then, you could always just use VLC and the VLC Remote app that lets you control it from your phone.

Seems the easiest solution. No extra services to set up or anything. Literally just a video player with an app to control it from your phone.

I think there’s some confusion here over your proposed set up.

What device do you imagine having plugged into the HDMI of your TV? Is it your laptop or something else?

Are you intending on watching the videos through the web front end you’re imagining, or just using the web front end as a “remote control” as it were?

I don’t think most of the responders have a clear vision of what you’re going for.

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