shooting Video on my K70

I have used my K70 without any problems since I got it about two years ago and continue to be impressed with the stills I take on it. However beginning of this week I tried to shoot some video with it for the first time. I shot a short video holding the camera normally (in Landscape) Whilst the video is ok on my LCD screen when I put it on my laptop it is turned 90 degrees clockwise. If I turn the camera into portrait then the video is the right way up but in portrait mode.

So my question is how do you shoot video in landscape mode as I cannot find a setting to swap modes? appreciate any help you can provide.