Did I find these by accident?

Somewhere in my learning how to download torrents, I acquired 6 8G files that say 1080p.HDTV.x264-HV at the end, with each film's title following the pattern above, the full title with periods between each word. They're all MKV files, each in their own folder, within which is a "sample" folder with a clip from that film that's between 60 and 70 meg.

Now, when I try to play these, either the samples or the full files, with VLC, they hang there for a few seconds and then nothing happens - the main button changes from pause back to play. Clicking it again just does the same thing.

So, what exactly did I find and how do I get them to play?