What I can remember from the movie is a girl gets a tape from her estranged father. After she starts playing the tape I think it goes on one long camera shot or simulates one. It gets more unsettling as the story progresses, and the recording doesn’t ever stop playing once it starts. Right at the very end of the film she finds her father (I think). That’s all I can remember for now.  I remember a lot about the flick, just can’t remember the name of it.  Thanks!