In public school in the early to mid 80s I saw a short film that (as best I can recall) ends with a kid hiding in the dark behind a door as extremely bright light from the other side of the door streams through its keyhole. Perhaps the doorknob begins melting--I'm not certain whether this is an embellishment on my part. I think the light source may be aliens.
I don't remember any dialog, but assume it was in English if there was any. I think the character was a young boy, but I'm not sure.