It has an 'Un Sospiro' feel to it.
it soudns like rachmaninov or Liadov
While it's entertaining to anticipate attributing this to an actual composition and known composer, it's hardly a profound bit of music--I've got to admit that it's quite a stretch from the clip you provided to Un Suspiro . I know what would be fun--those of you with MP3 or YouTube recording capability could start a "complete this clip" contest.
OK, after hearing the longer version, I'll be a monkey's uncle if it's anything other than specially-composed music by a specialist composer for films etc. It's got the obligatory Grieg-ripoff, Liszt-ripoff, Chopin-ripoff, Rachmaninoff-ripoff etc. etc. and it's written in a cod-1880s sort of style but with 1930s flourishes. No wonder it sounds slightly familiar to so many people - it's intended to! Skilfully done in its way, but kind of drivelly for all that.