I got a new Sansui 4K Android TV. When I plug an HDD into the USB port, it says in English that a media device was detected. So everything is fine until this point. Then it opens a media player which displays content in a different language. I can manage to select the video files, but even pausing the video says something like "pauzinja", so definitely not English. Is there a way to change this language? Which of course is not the language the whole TV interface is.
Change your default app for opening video files. You can download from play store many. I use to use MX player, others prefer VLC, but there are tons. Use what you like more. You can also deactivate the one you are using, or maybe uninstall.