Hopefully this is the right kind of question for this community, my apologies if not.
I’m looking for some sort of device that will let me load my own media from a USB / SD card, and play it to my TV. Does such a device exist? Some sort of remote controlled box that can just load mp4 / mkv files from locally hosted storage? I have been using my PC over HDMI but it can get annoying having an awkward room layout because my computer always has to be next to the TV to do this.
Like kylian said: Kodi. You can install it even on an android device (like a firestick) or you can go for some distro giving an out of the box good experience like LibreELEC.
And load it on a Raspberry Pi