Was poster earlier. Made by a company that makes display hardware and consumer-grade electronics. Probably the guts of a TV, DVR, or something.
>COV could stand for controller video, there's a coaxial output attached.
At about 1:00 you can see "HannStar J MV-1" written on the board. HannStar makes LCD screens and laptops, etc. It's probably an RF input for a TV. The closest match I could from for that part member is this newer model:
https://www.ebay.ca/itm/hannstar-j-94v-0-mv-1/202785902649?hash=item2f36fb5039:g:dCEAAOSwLKpdiirB