This should be on the "General HD Discussion" board, since it's an mkv file.
Seeing atrocious image quality on a copy of predators 1080p. Is it my screen or is it something else?
There's no way we can answer that unless we have access to the exact same file you're playing.
My guess is that it's a defective mkv cross-conversion. But you'll have to compare with other files to verify.
Remember that torrent uploaders are a bunch of amateurs. Proper encodes come from only a handful of expert video buffs who actually know what they're doing. In their hands, a 720p encode should look nearly indistinguishable from the 1080p source.
So don't be surprised if an encode is defective. In fact, it's the reverse that is true. It's when the encode is great that you should be surprised
.
That's why I only download AVI files. Not so much of a waste of time if I get a crappy encode.